View Code of Problem 128

#include<stdio.h>
#include<string.h>
int mins(int a, int b) {
	if (a > b)
		return b;
	else
		return a;
}
int main() {
	int n, m, a,b,t, min,sum;
	while (scanf("%d %d", &n, &m) != EOF) {
		sum=min = 0;
		while (m > 0) {
			scanf("%d %d %d", &a, &b, &t);
			sum += mins(mins(a, b), t);
			m--;
		}
		if (sum < 0)
			printf("YES\n");
		else
			printf("NO");
	}
	return 0;
}