最近脑子不好使，不知道是哪里写错了，求dalao指点......

#include <iostream>
#include <cstdio>
using namespace std;

typedef long long ll;
struct bus {
	int way, price, t;
};
struct node {
	int T, pri;
	bool used;
};

bus a[100000 + 50]; node dc[100000 + 50];
int n, now; 
ll ans;
int front, endly;

int main() {
	scanf("%d", &n);
	for (int i = 1; i <= n; i++)
		scanf("%d%d%d", &a[i].way, &a[i].price, &a[i].t);
	now = 1;
	// int i;

	for (int i = 1; i <= n; i++) {
		if (!a[i].way) {
			dc[++endly].T = a[i].t;
			dc[endly].pri = a[i].price;
			dc[endly].used = false;
			ans += a[i].price;
			continue;
		}
		while (a[i].t - dc[front].T > 45 && front <= endly) ++front;
		// puts("ok");
		bool found = false;
		for (int j = front; j <= endly; j++)
			if (dc[j].pri >= a[i].price && !dc[j].used) {
				dc[j].used = false;
				found = true;
				break;
			}
		
		if (!found) ans += a[i].price;
	}
	printf("%d\n", ans);
	return 0;
}