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Submission #349814

# Submission time Handle Problem Language Result Execution time Memory
349814 2021-01-18T12:45:51 Z doowey Mousetrap (CEOI17_mousetrap) C++14
0 / 100
 892 ms 69228 KB 
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef pair<int,int> pii;

#define fi first
#define se second
#define mp make_pair
#define fastIO ios::sync_with_stdio(false);cin.tie(0);cout.tie(0);

const int N = (int)1e6 + 100;
vector<int> T[N];

int trap;
int mouse;

int dfs(int u, int par, int cum){
    vector<int> lis;
    int deg = 0;
    for(auto x : T[u]){
        if(x==par) continue;
        deg ++ ;
    }
    for(auto x : T[u]){
        if(x==par) continue;
        lis.push_back(dfs(x,u,cum+deg));
    }
    sort(lis.begin(), lis.end());
    if(lis.size() <= 1){
        return cum;
    }
    return lis[(int)lis.size() - 2];
}

int main(){
    fastIO;
    int n;
    cin >> n;
    cin >> trap >> mouse;
    int u, v;
    for(int i = 1; i < n; i ++ ){
        cin >> u >> v;
        T[u].push_back(v);
        T[v].push_back(u);
    }
    cout << dfs(mouse,trap,0);
    return 0;
}

Subtask #1
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 16 ms 23788 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 377 ms 67880 KB Output is correct
2 Correct 343 ms 64236 KB Output is correct
3 Correct 892 ms 69228 KB Output is correct
4 Incorrect 409 ms 46444 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #3
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 16 ms 23788 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 35.0

# Verdict Execution time Memory Grader output
1 Incorrect 16 ms 23788 KB Output isn't correct
2 Halted 0 ms 0 KB -