Submission #1234932

#TimeUsernameProblemLanguageResultExecution timeMemory
1234932hq77Fancy Fence (CEOI20_fancyfence)C++20
0 / 100
1095 ms328 KiB
// Source: https://usaco.guide/general/io #include <bits/stdc++.h> #include <cctype> using namespace std; #define ll long long const int MOD=1e9+7; int main() { ll n;cin>>n; // vector<int>h(n); ll sum=0; ll h,w; for(int i=0;i<n;i++){ cin>>h; } for(int i=0;i<n;i++){ cin>>w; sum+=w; } ll ans=0; for(int i=sum;i>=1;i--){ for(int j=h;j>=1;j--){ // cout<<i<<" "<<j<<endl; ans+=(((i%MOD)*(j%MOD))%MOD); ans%=MOD; } } cout<<ans%MOD;; }
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