oj.uz

답안 #1060240

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1060240 2024-08-15T11:53:51 Z aymanrs Nestabilnost (COI23_nestabilnost) C++17
12 / 100
 1500 ms 61456 KB 
#include<bits/stdc++.h>
using namespace std;
vector<int> cost, mic;int N;
struct node {
    vector<long long> dp;
    long long lock=-1,free = -1;
    vector<node*> l;
    int a;
};
// void dfs(node* n, node* p){
//     for(node* c : n->l) if(c!=p) dfs(c,n);
//     n->dp.resize(N+1);
//     n->free = LONG_LONG_MAX;
//     for(int k = n->a+1;k <= N;k++){
//         n->dp[k] = cost[k];
//         for(node* c : n->l){
//             if(c==p) continue;
//             if(!c->a){
//                 if(k == n->a+1) n->dp[k] += min(c->dp[k]-cost[k], c->free);
//                 else n->dp[k] += c->free;
//             } else if(c->a == n->a+1){
//                 if(k>c->a) n->dp[k] += min(c->dp[k]-cost[k], c->free);
//                 else n->dp[k] += c->free;
//             } else n->dp[k] += c->free;
//         }
//         n->free = min(n->free, n->dp[k]);
//     }
// }
long long dfs(node* n, node* p, int l, int r){
    if(l==r && r<N && n->lock != -1) return n->lock;
    if(l==1&&r==N&&n->free != -1) return n->free;
    long long ans = LONG_LONG_MAX;
    for(node* c : n->l) if(c!=p) {
        if(!c->a&&l<=n->a+1&&n->a+1<=r){
            ans = dfs(c, n, n->a+1,n->a+1);
        } else if(c->a == n->a+1&&r > c->a){
            ans = dfs(c, n, max(l,c->a+1),r);
            if(r == N) goto thi;
        }
        if(l==r) ans = min(ans,cost[l]+dfs(c,n, 1, N));
        else ans = min(ans,mic[l]+dfs(c,n,1,N));
    }
    if(ans==LONG_LONG_MAX) {
        if(l==r) ans = cost[l];
        else ans = mic[l];
    }
    thi:
    if(l==r&&r<N) n->lock=ans;
    if(l==1&&r==N) n->free=ans;
    return ans;
}
void solve(){
    int n;cin >> n;
    N=n;    
    node g[n+1];
    cost.resize(n+1);
    mic.resize(n+1);
    for(int i = 1;i <= n;i++) cin >> g[i].a;
    for(int i = 1;i <= n;i++) cin >> cost[i];
    for(int i = n;i >= 1;i--){
        mic[i] = cost[i];
        if(i < n) mic[i] = min(mic[i],mic[i+1]);
    }
    for(int i = 0;i < n-1;i++){
        int u,v;cin >> u >> v;
        g[u].l.push_back(&g[v]);
        g[v].l.push_back(&g[u]);
    }
    cout << dfs(&g[1], NULL, 1, N) << '\n';
}
int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    solve();
}

Subtask #1
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 1372 KB Output is correct
2 Correct 2 ms 1372 KB Output is correct
3 Correct 22 ms 1468 KB Output is correct
4 Correct 3 ms 1372 KB Output is correct
5 Correct 2 ms 1372 KB Output is correct
6 Correct 2 ms 1372 KB Output is correct

Subtask #2
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 121 ms 61268 KB Output is correct
2 Correct 154 ms 61264 KB Output is correct
3 Correct 707 ms 61456 KB Output is correct
4 Execution timed out 1537 ms 61252 KB Time limit exceeded
5 Halted 0 ms 0 KB -

Subtask #3
0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 0 ms 344 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 1372 KB Output is correct
2 Correct 2 ms 1372 KB Output is correct
3 Correct 22 ms 1468 KB Output is correct
4 Correct 3 ms 1372 KB Output is correct
5 Correct 2 ms 1372 KB Output is correct
6 Correct 2 ms 1372 KB Output is correct
7 Incorrect 0 ms 344 KB Output isn't correct
8 Halted 0 ms 0 KB -

Subtask #5
0 / 39.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 1372 KB Output is correct
2 Correct 2 ms 1372 KB Output is correct
3 Correct 22 ms 1468 KB Output is correct
4 Correct 3 ms 1372 KB Output is correct
5 Correct 2 ms 1372 KB Output is correct
6 Correct 2 ms 1372 KB Output is correct
7 Correct 121 ms 61268 KB Output is correct
8 Correct 154 ms 61264 KB Output is correct
9 Correct 707 ms 61456 KB Output is correct
10 Execution timed out 1537 ms 61252 KB Time limit exceeded
11 Halted 0 ms 0 KB -