oj.uz

Submission #517198

# Submission time Handle Problem Language Result Execution time Memory
517198 2022-01-22T17:13:58 Z Ai7081 Stations (IOI20_stations) C++17
0 / 100
 754 ms 656 KB 
#include <bits/stdc++.h>
using namespace std;

int cnt;
vector<int> ret, sub;
vector<vector<int>> adj;

void dfs(int v, int p, bool ismax) {
    ret[v] = cnt;
    sub[v] = 1;
    cnt += (!ismax);
    for (auto to : adj[v]) {
        if (to == p) continue;
        dfs(to, v, !ismax);
        if (ismax) ret[v] += sub[to];
        sub[v] += sub[to];
    }
    cnt += ismax;
    //if (ret[v] >= 1000) cout << endl << "========= error ===========" << endl;
    return;
}

vector<int> label(int n, int k, vector<int> u, vector<int> v) {
    adj.assign(n, vector<int>());
    for (int i=0; i<n-1; i++) {
        adj[u[i]].push_back(v[i]);
        adj[v[i]].push_back(u[i]);
    }
    sub.assign(n, 0);
    ret.assign(n, 0);
    cnt = 0;
    dfs(0, 0, 0);
    return ret;
}

int find_next_station(int s, int t, vector<int> c) {
    bool ismax = (s > c[0]);
    if (ismax) {
        if (t > s) return c[0];
        for (int i=1; i<(int)c.size(); i++) {
            if (t < c[i]) return c[i-1];
        }
        return c[c.size()-1];
    }
    else {
        if (t < s) return c[c.size()-1];
        for (int i=c.size()-2; i>=0; i++) {
            if (t > c[i]) return c[i+1];
        }
        return c[0];
    }
}

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 487 ms 656 KB Wrong query response.
2 Halted 0 ms 0 KB -

Subtask #2
0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 402 ms 612 KB Wrong query response.
2 Halted 0 ms 0 KB -

Subtask #3
0 / 16.0

# Verdict Execution time Memory Grader output
1 Incorrect 543 ms 656 KB Wrong query response.
2 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 754 ms 492 KB Output is correct
2 Incorrect 606 ms 400 KB Wrong query response.
3 Halted 0 ms 0 KB -

Subtask #5
0 / 61.0

# Verdict Execution time Memory Grader output
1 Incorrect 497 ms 616 KB Wrong query response.
2 Halted 0 ms 0 KB -