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Submission #790903

# Submission time Handle Problem Language Result Execution time Memory
790903 2023-07-23T09:20:25 Z 12345678 Fancy Fence (CEOI20_fancyfence) C++17
100 / 100
 30 ms 8716 KB 
#include <bits/stdc++.h>

using namespace std;

#define ll long long

const ll nx=1e5+5, mod=1e9+7;
ll n, ans, h, w, sm, H[nx], W[nx];
stack<pair<pair<ll, ll>, ll>> s;

ll cal(ll x)
{
    return (x*(x+1)/2)%mod;
}

int main()
{
    cin.tie(NULL)->sync_with_stdio(false);
    cin>>n;
    for (int i=0; i<n; i++) cin>>H[i];
    for (int i=0; i<n; i++) cin>>W[i];
    for (int i=0; i<n; i++)
    {
        ll h=H[i], w=W[i];
        ans=(ans+(cal(h)*cal(w))%mod)%mod;
        ll sw=0;
        while (!s.empty()&&s.top().first.first>h)
        {
            sw=(sw+s.top().first.second)%mod;
            sm=((sm-s.top().second)%mod+mod)%mod;
            s.pop();
        }
        ll tmp=(cal(h)*sw)%mod;
        s.push({{h, sw}, tmp});
        sm=(sm+tmp)%mod;
        ans=(ans+sm*w)%mod;
        tmp=(cal(h)*w)%mod;
        s.push({{h, w}, tmp});
        sm=(sm+tmp)%mod;
    }
    cout<<ans;
}

Subtask #1
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 340 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct

Subtask #3
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 9 ms 1984 KB Output is correct
4 Correct 15 ms 5716 KB Output is correct
5 Correct 22 ms 3764 KB Output is correct
6 Correct 22 ms 2280 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 2 ms 980 KB Output is correct
3 Correct 10 ms 3484 KB Output is correct
4 Correct 20 ms 6732 KB Output is correct
5 Correct 19 ms 6640 KB Output is correct
6 Correct 0 ms 212 KB Output is correct

Subtask #5
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 2 ms 980 KB Output is correct
4 Correct 10 ms 3496 KB Output is correct
5 Correct 19 ms 6740 KB Output is correct
6 Correct 30 ms 6652 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 2 ms 980 KB Output is correct
9 Correct 10 ms 3464 KB Output is correct
10 Correct 19 ms 6688 KB Output is correct
11 Correct 27 ms 6664 KB Output is correct
12 Correct 0 ms 212 KB Output is correct

Subtask #6
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 328 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 336 KB Output is correct
16 Correct 0 ms 212 KB Output is correct

Subtask #7
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 328 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 8 ms 2644 KB Output is correct
12 Correct 18 ms 6852 KB Output is correct
13 Correct 19 ms 4940 KB Output is correct
14 Correct 24 ms 3508 KB Output is correct
15 Correct 1 ms 344 KB Output is correct
16 Correct 4 ms 1108 KB Output is correct
17 Correct 15 ms 4504 KB Output is correct
18 Correct 20 ms 8640 KB Output is correct
19 Correct 25 ms 8716 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 2 ms 1108 KB Output is correct
22 Correct 10 ms 4436 KB Output is correct
23 Correct 19 ms 8492 KB Output is correct
24 Correct 20 ms 8556 KB Output is correct
25 Correct 1 ms 212 KB Output is correct
26 Correct 0 ms 340 KB Output is correct
27 Correct 1 ms 360 KB Output is correct
28 Correct 1 ms 360 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 3 ms 616 KB Output is correct
31 Correct 2 ms 604 KB Output is correct
32 Correct 10 ms 1988 KB Output is correct
33 Correct 13 ms 2004 KB Output is correct
34 Correct 28 ms 3608 KB Output is correct
35 Correct 28 ms 3624 KB Output is correct
36 Correct 20 ms 3728 KB Output is correct
37 Correct 22 ms 3780 KB Output is correct
38 Correct 0 ms 212 KB Output is correct
39 Correct 20 ms 3784 KB Output is correct
40 Correct 29 ms 3760 KB Output is correct
41 Correct 20 ms 4276 KB Output is correct
42 Correct 29 ms 6220 KB Output is correct