为什么错了，玄关

#include <bits/stdc++.h>
#define int long long
const int mod=1e9+7;
using namespace std;
int h[100005],w[100005];
signed main(){
	int n;
	cin>>n;
	for(int i=1;i<=n;i++){
		cin>>h[i];
	}
	for(int i=1;i<=n;i++){
		cin>>w[i];
	}
	int ans=0;
	for(int i=1;i<=n;i++){
		int p=h[i]*(h[i]+1)/2%mod;
		int q=w[i]*(w[i]+1)/2%mod;
		ans=(ans+p*q%mod)%mod;
	}
	for(int i=1;i<=n;i++){
		int minn=h[i];
		int sum=w[i];
		for(int j=i+1;j<=n;j++){
			minn=min(minn,h[j]);
			sum=(sum+w[j])%mod;
			int p=minn*(minn+1)/2%mod;
			int q=sum*(sum+1)/2%mod;
			ans=(ans+p*q%mod)%mod;
		}
	}
	cout<<ans;
}