oj.uz

Submission #479767

# Submission time Handle Problem Language Result Execution time Memory
479767 2021-10-13T04:34:13 Z sam571128 Fireworks (APIO16_fireworks) C++17
7 / 100
 362 ms 524292 KB 
#include <bits/stdc++.h>

#define int long long
#define fastio ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);

using namespace std;

const int N = 605, M = 305;
vector<pair<int,int>> adj[N];

int dp[N][M];

void dfs(int u, int p){
    if(adj[u].size()==1&&u!=1){
        dp[u][0] = 0;
    }

    for(auto [v,w] : adj[u]){
        if(v == p) continue;
        dfs(v,u);
        int val[M];
        fill(val,val+M,1e18);
        for(int i = 0;i < M;i++){
            for(int j = 0;j <= i;j++){
                val[i] = min(val[i], abs(w-(i-j))+dp[v][j]);
            }
        }

        for(int i = 0;i < M;i++){
            if(dp[u][i]==1e18) dp[u][i] = 0;
            dp[u][i] += val[i];
        }
    }
}

signed main(){
    fastio
    int n,m;
    cin >> n >> m;
    if(n==1){
        vector<int> tmp;
        for(int i = 0;i < m;i++){
            int a,x;
            cin >> a >> x;
            tmp.push_back(x);
        }

        sort(tmp.begin(),tmp.end());

        int to = tmp[tmp.size()/2];
        int ans = 0;

        for(auto x : tmp){
            ans += abs(x-to);
        }

        cout << ans << "\n";
    }else{
        for(int i = 2;i <= n;i++){
            int p,x;
            cin >> p >> x;
            adj[p].push_back({i,x});
            adj[i].push_back({p,x});
        }
        for(int i = 1;i <= m;i++){
            int p,x;
            cin >> p >> x;
            adj[p].push_back({i+m,x});
            adj[i+m].push_back({p,x});
        }

        fill(&dp[0][0],&dp[N-1][M-1],1e18);

        dfs(1,1);


        cout << *min_element(dp[1],dp[1]+M) << "\n";
    }
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 0 ms 332 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 0 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 0 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 336 KB Output is correct

Subtask #2
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 1740 KB Output is correct
2 Correct 3 ms 1740 KB Output is correct
3 Correct 5 ms 1740 KB Output is correct
4 Runtime error 362 ms 524292 KB Execution killed with signal 9
5 Halted 0 ms 0 KB -

Subtask #3
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 0 ms 332 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 0 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 0 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 3 ms 1740 KB Output is correct
12 Correct 3 ms 1740 KB Output is correct
13 Correct 5 ms 1740 KB Output is correct
14 Runtime error 362 ms 524292 KB Execution killed with signal 9
15 Halted 0 ms 0 KB -

Subtask #4
0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 0 ms 332 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 0 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 0 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 3 ms 1740 KB Output is correct
12 Correct 3 ms 1740 KB Output is correct
13 Correct 5 ms 1740 KB Output is correct
14 Runtime error 362 ms 524292 KB Execution killed with signal 9
15 Halted 0 ms 0 KB -