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Submission #791348

# Submission time Handle Problem Language Result Execution time Memory
791348 2023-07-24T03:33:18 Z ttamx Fancy Fence (CEOI20_fancyfence) C++14
0 / 100
 4 ms 352 KB 
#include<bits/stdc++.h>

using namespace std;

typedef long long ll;

const int N=1e5+5;
const ll mod=1e9+7;
const ll inv2=5e8+4;

int n;
ll h[N],w[N];
ll ans;

int main(){
    cin.tie(nullptr)->sync_with_stdio(false);
    cin >> n;
    for(int i=1;i<=n;i++)cin >> h[i];
    for(int i=1;i<=n;i++)cin >> w[i];
    for(int i=1;i<=n;i++){
        ll rmq=h[i];
        ans+=h[i]*w[i];
        ans%=mod;
        for(int j=i;j>=1;j--){
            rmq=min(rmq,h[j]);
            ans+=rmq*rmq*w[i]%mod*w[j]%mod;
            ans%=mod;
        }
    }
    cout << ans*inv2%mod;
}

Subtask #1
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Incorrect 3 ms 340 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
0 / 12.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 324 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Incorrect 4 ms 340 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #4
0 / 15.0

# Verdict Execution time Memory Grader output
1 Incorrect 3 ms 340 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Incorrect 3 ms 352 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #6
0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Incorrect 3 ms 340 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #7
0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Incorrect 3 ms 340 KB Output isn't correct
3 Halted 0 ms 0 KB -