洛谷IDE居然显示输入长度不合法？？？

比如2500 4300的数据就显示输入长度不合法，而输入相同的题解就不会

真的快疯了，一个题代码写了20分钟调这个错两个小时

好心人能帮着看看吗qwq

#include<iostream>
#include<iomanip>
#include<algorithm>
#include<queue>
#include<map>
#include<stack>
#include<cmath>
#include<cstring>
#include<string>
#include<cstdio>

using namespace std;
int w[300001],v[300001],l[300001],r[300001],n,m,s;
long long qw[200001]={0},qv[200001]={0};
long long ans=1e18,answ=0;
long long u=0,d=1e18,mid;
long long check(int k){
	long long cnt=0;
	for(int i=1;i<=n;i++)qw[i]=0,qv[i]=0;
	for(int i=1;i<=n;i++){
		if(w[i]>=k){
			qw[i]=qw[i-1]+1;
			qv[i]=qv[i-1]+v[i];
		}
		else{
			qw[i]=qw[i-1];
			qv[i]=qv[i-1];
		}
	}
	for(int i=1;i<=m;i++)cnt+=(qv[r[i]]-qv[l[i]-1])*(qw[r[i]]-qw[l[i]-1]);
	return cnt;
}
int main(){
	//freopen("bird.in","r",stdin);
	//freopen("bird.out","w",stdout);
	cin>>n>>m>>s;
	for(int i=1;i<=n;i++){
		cin>>w[i]>>v[i];
		//u=max(u,w[i]);
		//d=min(d,w[i]);
	}
	u=1e6;
	d=0;
	for(int i=1;i<=m;i++)cin>>l[i]>>r[i];
	while(d<u){
		mid=(u+d)/2;
		//cout<<mid<<" "<<check(mid)<<endl;
		if(check(mid)<s)u=mid-1;
		if(check(mid)>s)d=mid+1;
		if(abs(check(mid)-s)<ans)ans=abs(check(mid)-s);
		if(check(mid)==s){cout<<ans<<endl;return 0;}
	}
	cout<<ans<<endl;
	return 0;
}