题解 | 小乐乐算多少人被请家长

#include <stdio.h>

int main()
{
	int n = 0; 
	int a, b, c = 0; 
	int sum = 0;
	int count = 0; 
	scanf("%d\n", &n); 
	for (int i = 0; i < n; i++)
	{
		scanf("%d %d %d", &a, &b, &c); 
		sum = a + b + c;
		if (sum / 3 < 60)
		{
			count++; 
		}
	}
	printf("%d\n", count); 
	return 0; 
}