Cod sursa(job #854931)

Utilizator roots4Irimia Alexandru Gabriel roots4 Data 14 ianuarie 2013 13:04:42
Problema Nunta Scor 40
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.34 kb
Raporteaza aceasta sursa 
#include<stdio.h>

using namespace std;

FILE*f=fopen("nunta.in","r");
FILE*g=fopen("nunta.out","w");

long long a,b,c;
int n,i;

int main(){
	
	fscanf(f,"%d",&n);
	
	a=1,b=2,c=0;
	
	if(n<=2)
		fprintf(g,"%d",n);
	else{
		n-=2;
		for(i=1;i<=n;i++){
			c=a+b;
			a=b;
			b=c;
		}
		fprintf(g,"%d",b);
	}
	
	return 0;
}