谢谢大家，我太垃圾了，代码一个劲地报错 求调，谢谢大家啦

#include <bits/stdc++.h>
using namespace std;
const int maxn = 1e5+10;
int n,w;//n是数量，w是载重 
int ans = 0;
struct coin{
	int price;
	int heavy;
	int num;
}a[maxn];
bool sort(coin a,coin b){
	return a.price>b.price;
}
int main(){
	int c;
	scanf("%d%d",&n,&w);
	for(int i = 0;i<n;i++){
		scanf("%d%d%d",&a[i].price,&a[i].heavy,a[i].num);
	}
	sort(a,a+n);
	for(int i = 0;i<n;i++){
		if(w<=0)break;
		w-=a[i].heavy;
		ans+=a[i].price*a[i].num;
		c = i;
	}
	if(w<0){
		ans+=a[c].heavy*a[c].price;
	}
	printf("%d",ans);
	return 0;
}