oj.uz

답안 #927354

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
927354 2024-02-14T18:50:32 Z VMaksimoski008 슈퍼트리 잇기 (IOI20_supertrees) C++14
21 / 100
 168 ms 22352 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);

            if(G.size() == 2) return 0;
            
            if(G.size() > 2) {
                B[G[0]][G.back()] = B[G.back()][G[0]] = 1;
                for(int i=1; i<G.size(); i++)
                    B[G[i]][G[i+1]] = B[G[i+1]][G[i]] = 1;
            }
        }

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

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:120:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  120 |                 for(int i=1; i<G.size(); i++)
      |                              ~^~~~~~~~~

Subtask #1
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 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 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 9 ms 1108 KB Output is correct
7 Correct 165 ms 22136 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 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 9 ms 1108 KB Output is correct
7 Correct 165 ms 22136 KB Output is correct
8 Correct 0 ms 348 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 8 ms 1116 KB Output is correct
13 Correct 158 ms 22196 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 344 KB Output is correct
16 Correct 3 ms 856 KB Output is correct
17 Correct 74 ms 12056 KB Output is correct
18 Correct 0 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 41 ms 5848 KB Output is correct
21 Correct 162 ms 21972 KB Output is correct
22 Correct 168 ms 22132 KB Output is correct
23 Correct 165 ms 22124 KB Output is correct
24 Correct 157 ms 22352 KB Output is correct
25 Correct 67 ms 12112 KB Output is correct
26 Correct 72 ms 12116 KB Output is correct
27 Correct 167 ms 22020 KB Output is correct
28 Correct 158 ms 22024 KB Output is correct

Subtask #3
0 / 19.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 344 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 1 ms 600 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 344 KB Output is correct
2 Runtime error 1 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 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 9 ms 1108 KB Output is correct
7 Correct 165 ms 22136 KB Output is correct
8 Correct 0 ms 348 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 8 ms 1116 KB Output is correct
13 Correct 158 ms 22196 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 344 KB Output is correct
16 Correct 3 ms 856 KB Output is correct
17 Correct 74 ms 12056 KB Output is correct
18 Correct 0 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 41 ms 5848 KB Output is correct
21 Correct 162 ms 21972 KB Output is correct
22 Correct 168 ms 22132 KB Output is correct
23 Correct 165 ms 22124 KB Output is correct
24 Correct 157 ms 22352 KB Output is correct
25 Correct 67 ms 12112 KB Output is correct
26 Correct 72 ms 12116 KB Output is correct
27 Correct 167 ms 22020 KB Output is correct
28 Correct 158 ms 22024 KB Output is correct
29 Correct 0 ms 344 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 1 ms 600 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 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 9 ms 1108 KB Output is correct
7 Correct 165 ms 22136 KB Output is correct
8 Correct 0 ms 348 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 8 ms 1116 KB Output is correct
13 Correct 158 ms 22196 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 344 KB Output is correct
16 Correct 3 ms 856 KB Output is correct
17 Correct 74 ms 12056 KB Output is correct
18 Correct 0 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 41 ms 5848 KB Output is correct
21 Correct 162 ms 21972 KB Output is correct
22 Correct 168 ms 22132 KB Output is correct
23 Correct 165 ms 22124 KB Output is correct
24 Correct 157 ms 22352 KB Output is correct
25 Correct 67 ms 12112 KB Output is correct
26 Correct 72 ms 12116 KB Output is correct
27 Correct 167 ms 22020 KB Output is correct
28 Correct 158 ms 22024 KB Output is correct
29 Correct 0 ms 344 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 1 ms 600 KB Execution killed with signal 11
33 Halted 0 ms 0 KB -