oj.uz

답안 #779446

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
779446 2023-07-11T12:14:21 Z t6twotwo 늑대인간 (IOI18_werewolf) C++17
15 / 100
 4000 ms 70452 KB 
#include "werewolf.h"
#include <bits/stdc++.h>
using namespace std;
int N, timer;
vector<int> a[2], l[2], r[2], p[2];
vector<vector<int>> adj[2], ch[2];
void dfs(int z, int x) {
    l[z][x] = timer;
    for (int y : ch[z][x]) {
        dfs(z, y);
    }
    r[z][x] = ++timer;
    a[z].push_back(x);
}
void build(int z) {
    p[z].resize(N, N);
    l[z].resize(N);
    r[z].resize(N);
    ch[z].resize(N);
    vector<int> par(N);
    iota(par.begin(), par.end(), 0);
    function<int(int)> find = [&](int x) {
        return x == par[x] ? x : par[x] = find(par[x]);
    };
    for (int i = 0; i < N; i++) {
        for (int j : adj[z][i]) {
            if (j > i) {
                continue;
            }
            int x = find(j);
            if (x == i) {
                continue;
            }
            ch[z][i].push_back(x);
            p[z][x] = par[x] = i;
        }
    }
    timer = 0;
    dfs(z, N - 1);
}
vector<int> check_validity(int n, vector<int> X, vector<int> Y, vector<int> S, vector<int> E, vector<int> L, vector<int> R) {
    N = n;
    adj[0].resize(N);
    adj[1].resize(N);
    for (int i = 0; i < X.size(); i++) {
        adj[0][X[i]].push_back(Y[i]);
        adj[0][Y[i]].push_back(X[i]);
        X[i] = N - 1 - X[i];
        Y[i] = N - 1 - Y[i];
        adj[1][X[i]].push_back(Y[i]);
        adj[1][Y[i]].push_back(X[i]);
    }
    build(0);
    build(1);
    for (int i = 0; i < N; i++) {
        a[1][i] = N - 1 - a[1][i];
        p[1][i] = N - 1 - p[1][i];
        for (int &x : ch[1][i]) {
            x = N - 1 - x;
        }
    }
    for (int i = 0; i < N / 2; i++) {
        swap(p[1][i], p[1][N - 1 - i]);
        swap(l[1][i], l[1][N - 1 - i]);
        swap(r[1][i], r[1][N - 1 - i]);
        swap(ch[1][i], ch[1][N - 1 - i]);
    }
    int Q = S.size();
    vector<int> ans(Q);
    for (int i = 0; i < Q; i++) {
        int t[2];
        t[0] = E[i];
        while (p[0][t[0]] <= R[i]) {
            t[0] = p[0][t[0]];
        }
        t[1] = S[i];
        while (p[1][t[1]] >= L[i]) {
            t[1] = p[1][t[1]];
        }
        vector<bool> f(N);
        for (int j = l[1][t[1]]; j < r[1][t[1]]; j++) {
            f[a[1][j]] = 1;
        }
        for (int j = l[0][t[0]]; j < r[0][t[0]]; j++) {
            if (f[a[0][j]]) {
                ans[i] = 1;
            }
        }
    }
    return ans;
}

Compilation message

werewolf.cpp: In function 'std::vector<int> check_validity(int, std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>)':
werewolf.cpp:45:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   45 |     for (int i = 0; i < X.size(); i++) {
      |                     ~~^~~~~~~~~~

Subtask #1
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 300 KB Output is correct
2 Correct 1 ms 300 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 300 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct

Subtask #2
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 300 KB Output is correct
2 Correct 1 ms 300 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 300 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 16 ms 1328 KB Output is correct
11 Correct 11 ms 1236 KB Output is correct
12 Correct 6 ms 1236 KB Output is correct
13 Correct 20 ms 1464 KB Output is correct
14 Correct 16 ms 1472 KB Output is correct
15 Correct 15 ms 1364 KB Output is correct

Subtask #3
0 / 34.0

# 결과 실행 시간 메모리 Grader output
1 Correct 531 ms 65900 KB Output is correct
2 Execution timed out 4051 ms 70452 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #4
0 / 51.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 300 KB Output is correct
2 Correct 1 ms 300 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 300 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 16 ms 1328 KB Output is correct
11 Correct 11 ms 1236 KB Output is correct
12 Correct 6 ms 1236 KB Output is correct
13 Correct 20 ms 1464 KB Output is correct
14 Correct 16 ms 1472 KB Output is correct
15 Correct 15 ms 1364 KB Output is correct
16 Correct 531 ms 65900 KB Output is correct
17 Execution timed out 4051 ms 70452 KB Time limit exceeded
18 Halted 0 ms 0 KB -