Cod sursa(job #862404)

Utilizator hcalinHrih Calin hcalin Data 22 ianuarie 2013 17:59:47
Problema Energii Scor 5
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.31 kb
Raporteaza aceasta sursa 
#include<cstdio>
using namespace std;

int n,i,w,pw,cw,sum;

int main () {
	freopen("energii.in","r",stdin);
	freopen("energii.out","w",stdout);
	scanf("%d",&n);
	scanf("%d",&w);
	for ( i = 1 ; i <= n ; i++ )
	{	scanf("%d%d",&pw,&cw);
		sum += pw;
	}
	if( sum < w ) 
		printf("-1\n");
	return 0;
}