include

using namespace std;

int main() {

int n, A = 0, B = 0, C = 0;
scanf("%d", &n);

for (int i = 0; i < n; i++) {

	int a, b, c;
	scanf("%d%d%d", &a, &b, &c);
	A += a;
	B += b;
	C += c;
}

while (C >= 60) {
	B++;
	C -= 60;
}

while (B >= 60) {
	A++;
	B -= 60;
}

printf("%dhour %dminute %dsecond", A, B, C);
return 0;

}