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12 lines
209 B
C++
12 lines
209 B
C++
# include<stdio.h>
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int main()
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{
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_int64 a[51]={0,1};
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int n;
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for(n=2;n<51;n++)
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a[n]=a[n-1]+a[n-2];
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while(scanf("%d",&n)&&n!=-1)
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printf("%I64d\n",a[n]);
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return 0;
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}
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