oj.uz

Submission #295024

# Submission time Handle Problem Language Result Execution time Memory
295024 2020-09-09T12:30:07 Z thebes Inspection (POI11_ins) C++14
0 / 100
 1737 ms 92636 KB 
#include <bits/stdc++.h>
using namespace std;

const int MN = 1e6+5;
int N, i, x, y, sz[MN], mx[MN];
vector<int> adj[MN], dis;
long long ans[MN];

int dfs(int n,int p){
    sz[n] = 1;
    for(auto v : adj[n]){
        if(v==p) continue;
        sz[n] += dfs(v, n);
        mx[n] = max(mx[n], sz[v]);
    }
    return sz[n];
}

void acc(int n,int p,int d){
    dis.push_back(d);
    for(auto v : adj[n]){
        if(v==p) continue;
        acc(v, n, d+1);
    }
}

void dfs2(int n,int p){
    if(2*mx[n]<=N&&2*(N-sz[n])<=N){
        dis.clear();
        acc(n, 0, 0);
        sort(dis.begin(),dis.end());
        for(auto v : dis) ans[n] += 2*v;
        ans[n] -= dis.back();
    }
    else ans[n] = -1;
    for(auto v : adj[n]){
        if(v==p) continue;
        dfs2(v, n);
    }
}

int main(){
    scanf("%d",&N);
    for(i=1;i<N;i++){
        scanf("%d%d",&x,&y);
        adj[x].push_back(y);
        adj[y].push_back(x);
    }
    dfs(1, 0); dfs2(1, 0);
    for(i=1;i<=N;i++)
        printf("%lld\n",ans[i]);
    return 0;
}

Compilation message

ins.cpp: In function 'int main()':
ins.cpp:43:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   43 |     scanf("%d",&N);
      |     ~~~~~^~~~~~~~~
ins.cpp:45:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   45 |         scanf("%d%d",&x,&y);
      |         ~~~~~^~~~~~~~~~~~~~

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 17 ms 23808 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 23808 KB Output is correct
2 Incorrect 17 ms 23808 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 18 ms 23928 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 33 ms 25216 KB Output is correct
2 Incorrect 32 ms 25600 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #5
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 47 ms 26616 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 120 ms 30760 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 831 ms 58312 KB Output is correct
2 Incorrect 802 ms 66024 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #8
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 1709 ms 92560 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #9
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 1724 ms 92576 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #10
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 1737 ms 92636 KB Output isn't correct
2 Halted 0 ms 0 KB -