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Submission #906440

# Submission time Handle Problem Language Result Execution time Memory
906440 2024-01-14T09:53:10 Z Ludissey Fancy Fence (CEOI20_fancyfence) C++14
30 / 100
 28 ms 1884 KB 
#include <bits/stdc++.h>
using namespace std;
#define int long long
 
int n,m;
int mod=1e9+7;
int MOD(int x) {
    return (x+mod)%mod;
}
int clc(int x, int y) {
    x=MOD(x);
    y=MOD(y); 
    return (((((x*(x+1)))/(long long)2)%mod)*((((y*(y+1)))/(long long)2)%mod))%mod; //non cest bon 
}
signed main() {
    ios::sync_with_stdio(false); cin.tie(nullptr);
    cin >> n;
    vector<int> h(n+1);
    vector<int> w(n+1);
    int totalw=0;
    for (int i = 1; i <= n; i++) cin>>h[i];
    for (int i = 1; i <= n; i++) { cin >> w[i]; totalw=(totalw+w[i])%mod; }
    int outp=0;
    h[0]=0;
    for (int i = 1; i <= n; i++)
    {
        // la formule elle marche je suis sur
        // non non juste 5 oui ou 4 sur cms
        //repete
        int side1=clc(totalw,h[i])-clc(totalw,h[i-1]);
        side1=MOD(side1); // 
        outp=MOD(outp+side1); //jai pas compris
        totalw-=w[i];
    }
    cout << outp << "\n";
    return 0;
}

Subtask #1
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Incorrect 1 ms 348 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 348 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Incorrect 1 ms 348 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 2 ms 604 KB Output is correct
3 Correct 11 ms 1260 KB Output is correct
4 Correct 22 ms 1884 KB Output is correct
5 Correct 22 ms 1884 KB Output is correct
6 Correct 1 ms 348 KB Output is correct

Subtask #5
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 3 ms 612 KB Output is correct
4 Correct 11 ms 1116 KB Output is correct
5 Correct 23 ms 1884 KB Output is correct
6 Correct 22 ms 1884 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 3 ms 612 KB Output is correct
9 Correct 11 ms 1112 KB Output is correct
10 Correct 22 ms 1880 KB Output is correct
11 Correct 28 ms 1880 KB Output is correct
12 Correct 1 ms 348 KB Output is correct

Subtask #6
0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Incorrect 1 ms 348 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 348 KB Output is correct
2 Incorrect 1 ms 348 KB Output isn't correct
3 Halted 0 ms 0 KB -