14 lines
244 B
C
14 lines
244 B
C
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#include <stdio.h>
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int main(void){
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int numbers,i;
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unsigned long long fib[51]={0,1};
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for(i = 2; i <= 50; i++){
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fib[i] = fib[i-1] + fib[i-2];
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}
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while(scanf("%d",&numbers) && numbers >= 0){
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printf("%llu\n",fib[numbers]);
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}
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return 0;
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}
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