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Submission #477496

# Submission time Handle Problem Language Result Execution time Memory
477496 2021-10-02T10:01:15 Z niloyroot Fancy Fence (CEOI20_fancyfence) C++14
15 / 100
 31 ms 2348 KB 
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
#define forp(i,a,b) for(ll i=a;i<=b;i++)
#define newl '\n'
const ll mod=1000000007;

ll nc2(ll a){
    ll b=a+1; 
    if(a%2==0){
        a/=2;
    } else {
        b/=2;
    }
    return (a*b)%mod;
}

void solve(){
    ll n; cin>>n;
    ll sum=0,h,c;
    forp(i,1,n){cin>>h;}
    forp(i,1,n){cin>>c; sum+=c; sum%=mod;}
    ll ans=nc2(h); ans*=nc2(sum); ans%=mod;
    cout<<ans<<newl;
}
 
int main() {
    ios_base::sync_with_stdio(false); 
    cin.tie(NULL);
    solve();
}

Subtask #1
0 / 0.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 204 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 12.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 204 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 13.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 204 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 3 ms 464 KB Output is correct
3 Correct 12 ms 1232 KB Output is correct
4 Correct 21 ms 2220 KB Output is correct
5 Correct 31 ms 2348 KB Output is correct
6 Correct 1 ms 208 KB Output is correct

Subtask #5
0 / 15.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 204 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 18.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 204 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 27.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 204 KB Output isn't correct
2 Halted 0 ms 0 KB -