22 lines
392 B
C
22 lines
392 B
C
#include <stdio.h>
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#define MAX 65535
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int main(void){
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int numbers = 1;
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long temp = 0;
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while(scanf("%d",&numbers) == 1){
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if(!numbers) continue;
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int i;
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long adult = 1,cowsa = 0, cowsb = 0, cowsc = 0;
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for(i = 1; i < numbers; i++){
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temp = cowsa;
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cowsa = adult;
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adult += cowsb;
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cowsb = temp;
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}
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printf("%ld\n",adult + cowsa + cowsb + cowsc);
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getchar();
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}
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return 0;
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}
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