32 lines
535 B
C
32 lines
535 B
C
#include <stdio.h>
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#include <math.h>
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#define PF(x) ((x)*(x))
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int main(void){
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int number ,i;
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double hs[600];
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scanf("%d",&number);
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for(i = 0; i < number; i++)scanf("%lf",hs+i);
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int if_ch = 1;
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while(if_ch){
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if_ch = 0;
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for(i = 0; i < number-1; i++)
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if(hs[i] < hs[i+1]){
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double temp = hs[i];
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hs[i] = hs[i+1];
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hs[i+1] = temp;
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if_ch = 1;
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}
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}
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i = 0;
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double all = 0.0;
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int count = 0;
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while(all < 20 && i < number){
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all += sqrt(PF(hs[i]) - 1) * 2;
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i++;
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count++;
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}
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printf("%d\n",count);
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return 0;
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}
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