| # | Submission time | Handle | Problem | Language | Result | Execution time | Memory |
|---|---|---|---|---|---|---|---|
| 598272 | 2022-07-17T22:02:08 Z | _Avocado_ | Fancy Fence (CEOI20_fancyfence) | C++14 | 49 ms | 6656 KB |
#include <bits/stdc++.h>
#define int int64_t
using namespace std;
int mod = 1e9+7;
int ans = 0;
int sum(int n){
n %= mod;
return (((n*(n+1)))/2)%mod;
}
int find(int a, auto&par){
if(a == par[a]) return a;
return par[a] = find(par[a], par);
}
void unite(int a, int b, int h, auto&par, auto&w){
a = find(a, par);
b = find(b, par);
int minus = (((sum(w[a]) * sum(h))%mod) + (sum(w[b]) * sum(h)))%mod;
//cout<<"minus "<<minus<<endl;
ans = (ans + ((sum(w[a] + w[b]) * sum(h))%mod - minus + mod)%mod)%mod;
par[b] = a;
w[a] = (w[a] + w[b])%mod;
}
signed main(){
ios_base::sync_with_stdio(false);
cin.tie(NULL);
//ifstream cin ("input.in");
//ofstream cout ("output.out");
int n; cin>>n;
vector<pair<int, int>>height(n);
vector<int>w(n);
for(int i = 0; i<n; ++i){
int a; cin>>a;
height[i] = {a, i};
}
for(auto&u: w) cin>>u;
for(int i = 0; i<n; ++i){
ans = (ans + (sum(height[i].first) * sum(w[i]))%mod)%mod;
}
//cout<<ans<<endl;
vector<int>par(n);
iota(par.begin(), par.end(), 0);
vector<int>fred(n);
sort(height.begin(), height.end());
reverse(height.begin(), height.end());
for(int i = 0; i<n; ++i){
int cur = height[i].second;
if(cur != 0 && fred[cur-1]) unite(cur, cur-1, height[i].first, par, w);
if(cur != n-1 && fred[cur+1]) unite(cur, cur+1, height[i].first, par, w);
fred[cur] = 1;
}
cout<<ans;
cout<<'\n';
}
Compilation message
| # | Verdict | Execution time | Memory | Grader output |
|---|---|---|---|---|
| 1 | Correct | 0 ms | 212 KB | Output is correct |
| 2 | Correct | 1 ms | 340 KB | Output is correct |
| # | 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 | 324 KB | Output is correct |
| 4 | Correct | 0 ms | 212 KB | Output is correct |
| 5 | Correct | 0 ms | 212 KB | Output is correct |
| # | Verdict | Execution time | Memory | Grader output |
|---|---|---|---|---|
| 1 | Correct | 0 ms | 320 KB | Output is correct |
| 2 | Correct | 1 ms | 340 KB | Output is correct |
| 3 | Correct | 17 ms | 2768 KB | Output is correct |
| 4 | Correct | 31 ms | 5404 KB | Output is correct |
| 5 | Correct | 34 ms | 5404 KB | Output is correct |
| 6 | Correct | 32 ms | 5360 KB | Output is correct |
| # | Verdict | Execution time | Memory | Grader output |
|---|---|---|---|---|
| 1 | Correct | 1 ms | 332 KB | Output is correct |
| 2 | Correct | 4 ms | 852 KB | Output is correct |
| 3 | Correct | 18 ms | 3160 KB | Output is correct |
| 4 | Correct | 36 ms | 6120 KB | Output is correct |
| 5 | Correct | 37 ms | 6244 KB | Output is correct |
| 6 | Correct | 1 ms | 320 KB | Output is correct |
| # | Verdict | Execution time | Memory | Grader output |
|---|---|---|---|---|
| 1 | Correct | 0 ms | 212 KB | Output is correct |
| 2 | Correct | 1 ms | 364 KB | Output is correct |
| 3 | Correct | 4 ms | 852 KB | Output is correct |
| 4 | Correct | 19 ms | 3136 KB | Output is correct |
| 5 | Correct | 36 ms | 6164 KB | Output is correct |
| 6 | Correct | 37 ms | 6280 KB | Output is correct |
| 7 | Correct | 1 ms | 328 KB | Output is correct |
| 8 | Correct | 4 ms | 848 KB | Output is correct |
| 9 | Correct | 18 ms | 3284 KB | Output is correct |
| 10 | Correct | 33 ms | 5964 KB | Output is correct |
| 11 | Correct | 37 ms | 6116 KB | Output is correct |
| 12 | Correct | 0 ms | 320 KB | Output is correct |
| # | Verdict | Execution time | Memory | Grader output |
|---|---|---|---|---|
| 1 | Correct | 0 ms | 212 KB | Output is correct |
| 2 | Correct | 1 ms | 332 KB | Output is correct |
| 3 | Correct | 0 ms | 324 KB | Output is correct |
| 4 | Correct | 0 ms | 212 KB | Output is correct |
| 5 | Correct | 0 ms | 212 KB | Output is correct |
| 6 | Correct | 0 ms | 212 KB | Output is correct |
| 7 | Correct | 0 ms | 212 KB | Output is correct |
| 8 | Correct | 1 ms | 340 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 | 324 KB | Output is correct |
| 12 | Correct | 1 ms | 340 KB | Output is correct |
| 13 | Correct | 1 ms | 372 KB | Output is correct |
| 14 | Correct | 1 ms | 332 KB | Output is correct |
| 15 | Correct | 1 ms | 364 KB | Output is correct |
| 16 | Correct | 0 ms | 212 KB | Output is correct |
| # | 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 | 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 | 0 ms | 212 KB | Output is correct |
| 7 | Correct | 1 ms | 212 KB | Output is correct |
| 8 | Correct | 0 ms | 320 KB | Output is correct |
| 9 | Correct | 0 ms | 320 KB | Output is correct |
| 10 | Correct | 1 ms | 340 KB | Output is correct |
| 11 | Correct | 18 ms | 2860 KB | Output is correct |
| 12 | Correct | 31 ms | 5360 KB | Output is correct |
| 13 | Correct | 34 ms | 5404 KB | Output is correct |
| 14 | Correct | 34 ms | 5360 KB | Output is correct |
| 15 | Correct | 1 ms | 332 KB | Output is correct |
| 16 | Correct | 4 ms | 852 KB | Output is correct |
| 17 | Correct | 18 ms | 3160 KB | Output is correct |
| 18 | Correct | 39 ms | 6092 KB | Output is correct |
| 19 | Correct | 46 ms | 6232 KB | Output is correct |
| 20 | Correct | 1 ms | 340 KB | Output is correct |
| 21 | Correct | 6 ms | 852 KB | Output is correct |
| 22 | Correct | 19 ms | 3292 KB | Output is correct |
| 23 | Correct | 35 ms | 6036 KB | Output is correct |
| 24 | Correct | 37 ms | 6120 KB | Output is correct |
| 25 | Correct | 1 ms | 212 KB | Output is correct |
| 26 | Correct | 1 ms | 340 KB | Output is correct |
| 27 | Correct | 1 ms | 340 KB | Output is correct |
| 28 | Correct | 1 ms | 332 KB | Output is correct |
| 29 | Correct | 1 ms | 340 KB | Output is correct |
| 30 | Correct | 6 ms | 852 KB | Output is correct |
| 31 | Correct | 5 ms | 844 KB | Output is correct |
| 32 | Correct | 22 ms | 3156 KB | Output is correct |
| 33 | Correct | 21 ms | 3156 KB | Output is correct |
| 34 | Correct | 42 ms | 5964 KB | Output is correct |
| 35 | Correct | 49 ms | 5868 KB | Output is correct |
| 36 | Correct | 43 ms | 6092 KB | Output is correct |
| 37 | Correct | 42 ms | 6116 KB | Output is correct |
| 38 | Correct | 0 ms | 212 KB | Output is correct |
| 39 | Correct | 41 ms | 6124 KB | Output is correct |
| 40 | Correct | 39 ms | 6088 KB | Output is correct |
| 41 | Correct | 37 ms | 6252 KB | Output is correct |
| 42 | Correct | 34 ms | 6656 KB | Output is correct |