题解

#include <bits/stdc++.h>
using namespace std;
struct student {
	string id, name;
	int grade;
} a[101];

bool cmp(student x, student y) {
	return x.id < y.id;
}
int main() {
	int n;
	scanf("%d", &n);
	for (int i = 1; i <= n; i++) {
		string b;
		cin >> a[i].id >> a[i].name >> a[i].grade;
	}
	sort(a + 1, a + 1 + n, cmp);
	for (int i = 1; i <= n; i++)
		printf("%d\n", a[i].grade);
	return 0;
}