oj.uz

답안 #927351

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
927351 2024-02-14T18:47:24 Z VMaksimoski008 슈퍼트리 잇기 (IOI20_supertrees) C++14
21 / 100
 206 ms 22548 KB 
#include <bits/stdc++.h>
#include "supertrees.h"
 
#define sz(x) (int)x.size()
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
//#define int long long
 
using namespace std;
 
using ll = long long;
using ull = unsigned long long;
using ld = long double;
using pii = pair<int, int>;
using pll = pair<ll, ll>;
 
const int mod = 1e9 + 7;
const int LOG = 20;
const int maxn = 1e5 + 5;
const double eps = 1e-9;
 
struct DSU {
    int n, comp;
    vector<int> par, size;
 
    void config(int _n) {
        n = _n + 1;
        comp = _n;
        par.resize(n+1);
        size.resize(n+1, 1);
        for(int i=1; i<=n; i++) par[i] = i;
    }
 
    int get(int u) {
        if(u == par[u]) return u;
        return par[u] = get(par[u]);
    }
 
    bool uni(int u, int v) {
        u = get(u), v = get(v);
 
        if(u == v) return false;
        if(size[u] < size[v]) swap(u, v);
 
        size[u] += size[v];
        par[v] = u;
        comp--;
 
        return true;
    }
 
    int getComp() { return comp; }
    int getSize(int u) { return size[get(u)]; }
    bool sameSet(int u, int v) { return get(u) == get(v); }
};

vector<vector<int> > graph;
vector<bool> vis;
vector<int> G;

void dfs(int u) {
    vis[u] = 1;
    G.push_back(u);

    for(int &v : graph[u]) {
        if(vis[v]) continue;
        dfs(v);
    }
}
 
int construct(vector<vector<int> > p) {
    int n = p.size();
    vector<int> cnt(3);
 
    for(int i=0; i<n; i++)
        for(int j=0; j<n; j++) cnt[p[i][j]]++;
 
    if(cnt[0] + cnt[1] == n*n) {
        DSU dsu; dsu.config(n);
        vector<vector<int> > B(n, vector<int>(n, 0));
 
        for(int i=0; i<n; i++) {
            for(int j=0; j<n; j++) {
                if(p[i][j] == 1)
                    if(dsu.uni(i, j)) B[i][j] = B[j][i] = 1;
            }
        }
 
        for(int i=0; i<n; i++) {
            for(int j=0; j<n; j++) {
                if(p[i][j] == 1 && !dsu.sameSet(i, j)) return 0;
                if(p[i][j] == 0 && dsu.sameSet(i, j)) return 0;
            }
        }
 
        build(B);
        return 1;
    } else {
        vector<vector<int> > B(n, vector<int>(n, 0));
        graph.resize(n);

        for(int i=0; i<n; i++) {
            for(int j=i+1; j<n; j++) {
                if(p[i][j] == 2) {
                    graph[i].push_back(j);
                    graph[j].push_back(i);
                }
            }
        }

        for(int i=0; i<n; i++) {
            if(vis[i]) continue;
            G.clear();
            dfs(i);
            for(int i=0; i<G.size()-2; i++)
                B[G[i]][G[i+1]] = B[G[i+1]][G[i]] = 1;
            B[G[0]][G.back()] = B[G.back()][G[0]] = 1;
        }

        build(B);
        return 1;
    }
 
    return 1;
}

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:115:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  115 |             for(int i=0; i<G.size()-2; i++)
      |                          ~^~~~~~~~~~~

Subtask #1
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 7 ms 1116 KB Output is correct
7 Correct 162 ms 22044 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 7 ms 1116 KB Output is correct
7 Correct 162 ms 22044 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 7 ms 1116 KB Output is correct
13 Correct 158 ms 22548 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 78 ms 12112 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 41 ms 6068 KB Output is correct
21 Correct 163 ms 22532 KB Output is correct
22 Correct 158 ms 22040 KB Output is correct
23 Correct 164 ms 22544 KB Output is correct
24 Correct 154 ms 22024 KB Output is correct
25 Correct 68 ms 12044 KB Output is correct
26 Correct 68 ms 12112 KB Output is correct
27 Correct 159 ms 22036 KB Output is correct
28 Correct 206 ms 22040 KB Output is correct

Subtask #3
0 / 19.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Runtime error 0 ms 348 KB Execution killed with signal 11
5 Halted 0 ms 0 KB -

Subtask #4
0 / 35.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 600 KB Output is correct
2 Runtime error 0 ms 348 KB Execution killed with signal 11
3 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 7 ms 1116 KB Output is correct
7 Correct 162 ms 22044 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 7 ms 1116 KB Output is correct
13 Correct 158 ms 22548 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 78 ms 12112 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 41 ms 6068 KB Output is correct
21 Correct 163 ms 22532 KB Output is correct
22 Correct 158 ms 22040 KB Output is correct
23 Correct 164 ms 22544 KB Output is correct
24 Correct 154 ms 22024 KB Output is correct
25 Correct 68 ms 12044 KB Output is correct
26 Correct 68 ms 12112 KB Output is correct
27 Correct 159 ms 22036 KB Output is correct
28 Correct 206 ms 22040 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Runtime error 0 ms 348 KB Execution killed with signal 11
33 Halted 0 ms 0 KB -

Subtask #6
0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 7 ms 1116 KB Output is correct
7 Correct 162 ms 22044 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 7 ms 1116 KB Output is correct
13 Correct 158 ms 22548 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 78 ms 12112 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 41 ms 6068 KB Output is correct
21 Correct 163 ms 22532 KB Output is correct
22 Correct 158 ms 22040 KB Output is correct
23 Correct 164 ms 22544 KB Output is correct
24 Correct 154 ms 22024 KB Output is correct
25 Correct 68 ms 12044 KB Output is correct
26 Correct 68 ms 12112 KB Output is correct
27 Correct 159 ms 22036 KB Output is correct
28 Correct 206 ms 22040 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Runtime error 0 ms 348 KB Execution killed with signal 11
33 Halted 0 ms 0 KB -