题解 | #小乐乐算多少人被请家长#

`#include <stdio.h>

int main() { int n; int a; int b; int d = 0; int sum = 0; int arr[50][3] = { 0 };

scanf("%d ", &n);

for (a = 0; a < n; a++)
{
	for (b = 0; b < 3; b++)
	{
		scanf("%d", &arr[a][b]);
		sum += arr[a][b];
	}
	sum /= 3;
	if (sum < 60)
	{
		d++;
	}
	sum = 0;
}
printf("%d\n", d);
return 0;

}