diff --git a/2182/main b/2182/main
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index 0000000..6174e25
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diff --git a/2182/main.c b/2182/main.c
new file mode 100644
index 0000000..33752a0
--- /dev/null
+++ b/2182/main.c
@@ -0,0 +1,70 @@
+#include <stdio.h>
+
+#define MAX 8005
+
+struct node {
+    int from, to;
+    int value;
+};
+
+int cows[MAX];
+struct node tree[4*MAX];
+
+int build_tree(struct node *tree, long idx, int from, int to);
+int find_section(struct node *tree, long idx, int spn);
+int upd_tree(struct node *tree, long idx, int tidx);
+
+int main(void){
+    int n;
+    scanf("%d",&n);
+    build_tree(tree, 0, 1, n);
+    cows[0] = 0;
+    for(int i = 1; i < n; i++){
+        scanf("%d",cows+i);
+    }
+    for(int i = n-1; ~i; i--){
+        int idx = find_section(tree, 0, cows[i]);
+        cows[i] = idx;
+        upd_tree(tree, 0, idx);
+    }
+    for(int i = 0; i < n; i++) printf("%d\n",cows[i]);
+    return 0;
+}
+
+int build_tree(struct node *tree, long idx, int from, int to){
+    int h_idx = (from + to)/2;
+    tree[idx].from = from;
+    tree[idx].to = to;
+    tree[idx].value = 0;
+    if(from < to){
+        build_tree(tree, idx*2+1, from, h_idx);
+        build_tree(tree, idx*2+2, h_idx+1, to);
+        tree[idx].value = tree[idx*2+1].value + tree[idx*2+2].value;
+    }
+    else{
+        tree[idx].value = 1;
+    }
+    return 0;
+}
+
+int find_section(struct node *tree, long idx, int spn){
+    if(tree[idx].from == tree[idx].to){
+        return tree[idx].from;
+    }
+    if(tree[idx*2+1].value <= spn){
+        return find_section(tree, idx*2+2, spn-tree[idx*2+1].value);
+    }
+    else{
+        return find_section(tree, idx*2+1, spn);
+    }
+}
+
+int upd_tree(struct node *tree, long idx, int tidx){
+    int h_idx = (tree[idx].from + tree[idx].to)/2;
+    tree[idx].value--;
+    if(tree[idx].from < tree[idx].to){
+        if(tidx <= h_idx) upd_tree(tree, idx*2+1, tidx);
+        else upd_tree(tree, idx*2+2, tidx);
+    }
+    return 0;
+}
diff --git a/2182/problem.set b/2182/problem.set
new file mode 100644
index 0000000..e69de29
diff --git a/2182/stdin b/2182/stdin
new file mode 100644
index 0000000..e69de29
diff --git a/2182/stdout b/2182/stdout
new file mode 100644
index 0000000..e69de29
diff --git a/2352/main.c b/2352/main.c
new file mode 100644
index 0000000..c487cb7
--- /dev/null
+++ b/2352/main.c
@@ -0,0 +1,67 @@
+#include<stdio.h>
+
+#define MAX (15000+5L)
+
+struct node{
+    int from, to;
+    int n;
+};
+
+
+int rank[MAX];
+struct node tree[32000*4L];
+
+int build_tree(struct node *tree, long idx, int from , int to);
+int upd_tree(struct node *tree, long idx, int p_idx);
+int find_section(struct node *tree, long idx, int from, int to);
+
+int main(void){
+    int number, i;
+    build_tree(tree, 0, 0, 32000);
+    scanf("%d",&number);
+    for(i = 0; i < number; i++){
+        int x,y;
+        scanf("%d %d",&x,&y);
+        rank[find_section(tree, 0, 0, x)]++;
+        upd_tree(tree, 0, x);
+    }
+    for(i = 0; i < number; i++){
+        printf("%d\n",rank[i]);
+    }
+    return 0;
+}
+
+int build_tree(struct node *tree, long idx, int from , int to){
+    int h_idx = (from+to)/2;
+    tree[idx].from = from;
+    tree[idx].to = to;
+    tree[idx].n = 0;
+    if(from < to){
+        build_tree(tree, idx*2+1, from, h_idx);
+        build_tree(tree, idx*2+2, h_idx+1, to);
+    }
+    return 0;
+}
+
+int upd_tree(struct node *tree, long idx, int p_idx){
+    int h_idx = (tree[idx].from + tree[idx].to)/2;
+    tree[idx].n++;
+    if(tree[idx].from < tree[idx].to){
+        if(p_idx <= h_idx) upd_tree(tree, idx*2+1, p_idx);
+        else upd_tree(tree, idx*2+2, p_idx);
+    }
+    return 0;
+}
+
+int find_section(struct node *tree, long idx, int from, int to){
+    int h_idx = (tree[idx].from + tree[idx].to)/2, sum = 0;
+    if(tree[idx].from == from && tree[idx].to == to) return tree[idx].n;
+    if(from <= h_idx && to > h_idx)
+        sum = find_section(tree, idx*2+1, from, h_idx) + find_section(tree, idx*2+2, h_idx+1, to);
+    else if(from <= h_idx && to <= h_idx)
+        sum = find_section(tree, idx*2+1, from , to);
+    else if(from > h_idx && to > h_idx)
+        sum = find_section(tree, idx*2+2, from , to);
+    else printf("IMP!\n");
+    return sum;
+}
diff --git a/2352/problem.build b/2352/problem.build
new file mode 100644
index 0000000..1b027cb
Binary files /dev/null and b/2352/problem.build differ
diff --git a/2352/problem.set b/2352/problem.set
new file mode 100644
index 0000000..e69de29
diff --git a/2352/stdin b/2352/stdin
new file mode 100644
index 0000000..93d8d92
--- /dev/null
+++ b/2352/stdin
@@ -0,0 +1,6 @@
+ 5
+ 1 1
+ 5 1
+ 7 1
+ 3 3
+ 5 5
diff --git a/2352/stdout b/2352/stdout
new file mode 100644
index 0000000..21de5f9
--- /dev/null
+++ b/2352/stdout
@@ -0,0 +1,5 @@
+1
+2
+1
+1
+0
diff --git a/2828/main.c b/2828/main.c
new file mode 100644
index 0000000..dee8b15
--- /dev/null
+++ b/2828/main.c
@@ -0,0 +1,75 @@
+#include <stdio.h>
+
+#define MAX 200005
+
+struct node {
+    long from, to;
+    int value;
+};
+
+long peo[MAX],num[MAX],line[MAX];
+struct node tree[4*MAX];
+
+int build_tree(struct node *tree, long idx, long from, long to);
+long find_section(struct node *tree, long idx, long spn);
+int upd_tree(struct node *tree, long idx, long tidx);
+
+int main(void){
+    int n;
+    
+    while(scanf("%d",&n) != EOF){
+        build_tree(tree, 0, 1, n);
+        for(int i = 0; i < n; i++){
+            scanf("%ld %ld",peo+i, num+i);
+        }
+        for(int i = n-1; ~i; i--){
+            long idx = find_section(tree, 0, peo[i]);
+            line[idx-1] = num[i];
+            upd_tree(tree, 0, idx);
+        }
+        for(int i = 0; i < n; i++){
+            if(i) printf(" ");
+            printf("%ld",line[i]);
+        }
+        printf("\n");
+    }
+    return 0;
+}
+
+int build_tree(struct node *tree, long idx, long from, long to){
+    long h_idx = (from + to)/2;
+    tree[idx].from = from;
+    tree[idx].to = to;
+    tree[idx].value = 0;
+    if(from < to){
+        build_tree(tree, idx*2+1, from, h_idx);
+        build_tree(tree, idx*2+2, h_idx+1, to);
+        tree[idx].value = tree[idx*2+1].value + tree[idx*2+2].value;
+    }
+    else{
+        tree[idx].value = 1;
+    }
+    return 0;
+}
+
+long find_section(struct node *tree, long idx, long spn){
+    if(tree[idx].from == tree[idx].to){
+        return tree[idx].from;
+    }
+    if(tree[idx*2+1].value <= spn){
+        return find_section(tree, idx*2+2, spn-tree[idx*2+1].value);
+    }
+    else{
+        return find_section(tree, idx*2+1, spn);
+    }
+}
+
+int upd_tree(struct node *tree, long idx, long tidx){
+    long h_idx = (tree[idx].from + tree[idx].to)/2;
+    tree[idx].value--;
+    if(tree[idx].from < tree[idx].to){
+        if(tidx <= h_idx) upd_tree(tree, idx*2+1, tidx);
+        else upd_tree(tree, idx*2+2, tidx);
+    }
+    return 0;
+}
diff --git a/2828/problem.build b/2828/problem.build
new file mode 100644
index 0000000..9a5d219
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diff --git a/2828/problem.set b/2828/problem.set
new file mode 100644
index 0000000..e69de29
diff --git a/2828/stdin b/2828/stdin
new file mode 100644
index 0000000..e69de29
diff --git a/2828/stdout b/2828/stdout
new file mode 100644
index 0000000..e69de29
diff --git a/3264/main.c b/3264/main.c
new file mode 100644
index 0000000..21794ed
--- /dev/null
+++ b/3264/main.c
@@ -0,0 +1,66 @@
+#include <stdio.h>
+
+#define MAX (50000+5L)
+
+struct node{
+    int from ,to;
+    long height;
+};
+
+long cows[MAX];
+struct node hi[MAX*4], lo[MAX*4];
+int build_tree(struct node *tree, long *cows, long idx, int from, int to, int hol);
+long find_selection(struct node *tree, long idx, int from, int to, int hol);
+
+int main(void){
+    long nc,nm;
+    printf("INPUT:\n");
+    scanf("%ld %ld",&nc,&nm);
+    for(long i = 0; i < nc; i++) scanf("%ld",cows+i);
+    build_tree(hi, cows, 0, 1, (int)nc, 0);
+    build_tree(lo, cows, 0, 1, (int)nc, 1);
+    for(long i = 0; i < nm; i++){
+        int idxa, idxb;
+        scanf("%d %d",&idxa,&idxb);
+        long hh = find_selection(hi, 0, idxa, idxb, 0);
+        long lh = find_selection(lo, 0, idxa, idxb, 1);
+        printf("%ld\n",hh-lh);
+    }
+    
+    return 0;
+}
+
+int build_tree(struct node *tree, long *cows, long idx, int from, int to, int hol){
+    int h_idx = (from + to)/2;
+    tree[idx].from = from;
+    tree[idx].to = to;
+    if(from < to){
+        build_tree(tree, cows, idx*2+1, from, h_idx, hol);
+        build_tree(tree, cows, idx*2+2, h_idx+1, to, hol);
+        long l = tree[idx*2+1].height, r = tree[idx*2+2].height;
+        if(hol == 0) tree[idx].height = r>l?r:l;
+        else tree[idx].height = r>l?l:r;
+    }
+    else{
+        tree[idx].height = cows[from-1];
+    }
+    
+    return 0;
+}
+
+long find_selection(struct node *tree, long idx, int from, int to, int hol){
+    int h_idx = (tree[idx].from + tree[idx].to)/2;
+    if(from == tree[idx].from && to == tree[idx].to) return tree[idx].height;
+    if(from <= h_idx && to > h_idx){
+        long l = find_selection(tree, idx*2+1, from, h_idx, hol), r = find_selection(tree, idx*2+2, h_idx+1, to, hol);
+        if(hol == 0) return r>l?r:l;
+        else return r>l?l:r;
+    }
+    else if(from <= h_idx && to <= h_idx){
+        return find_selection(tree, idx*2+1, from, to, hol);
+    }
+    else if (from > h_idx && to > h_idx){
+        return find_selection(tree, idx*2+2, from, to, hol);
+    }
+    return 0;
+}
diff --git a/3264/problem.build b/3264/problem.build
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index 0000000..05540fc
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diff --git a/3264/problem.set b/3264/problem.set
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diff --git a/3264/stdin b/3264/stdin
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index 0000000..e69de29
diff --git a/3264/stdout b/3264/stdout
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index 0000000..e69de29