之前没见过这个RE信息,跟数组越界报错不一样,程序甚至没有一个不正常的返回值

Runtime Error.
Received signal 11: Segmentation fault with invalid memory reference.

代码：

#include<iostream>
#include<algorithm>
using namespace std;
struct jbd{
	double m;
	double v;
	double xjb;
};
jbd a[10005];
int N;
double T;
bool cmp(jbd j1, jbd j2){
	return j1.xjb>j2.xjb;
}
int main(){
	cin>>N>>T;
	for(int i=0;i<N;i++){
		cin>>a[i].m>>a[i].v;
		a[i].xjb=a[i].v/a[i].m;
	}
	sort(a,a+N,cmp);
	int i=0;
	double C=0,D=0;
	while(C<T){
		C+=a[i].m;
		D+=a[i].v;
		i++;
	}
	i--;
	C=T-C;//可用容量C
	D+=C*a[i].xjb; 
	printf("%0.2lf",D);
	return 0;
}