Cod sursa(job #315865)
Utilizator | Data | 17 mai 2009 16:02:59 | |
---|---|---|---|
Problema | Nunta | Scor | 70 |
Compilator | cpp | Status | done |
Runda | Arhiva de probleme | Marime | 0.35 kb |
#include <stdio.h>
int main()
{int N;
long long b,i,c,x;
freopen("nunta.in","r",stdin);
freopen("nunta.out","w",stdout);
scanf("%d",&N);
b=1;c=2;
if(N==1) {printf("1");return 0;}
else if(N==2) {printf("2");return 0;}
else{
for(i=3;i<=N;i++)
x=b+c,b=c,c=x;
printf("%lld",x);}
return 0;
}