oj.uz

Submission #927183

# Submission time Handle Problem Language Result Execution time Memory
927183 2024-02-14T11:15:28 Z VMaksimoski008 Connecting Supertrees (IOI20_supertrees) C++14
21 / 100
 167 ms 22304 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); }
};

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 if(cnt[0] + cnt[2] == n*n) {
        DSU dsu, dsu2;
        dsu.config(n), dsu2.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] == 2) {
                    if(!dsu.sameSet(i, j) && !dsu2.sameSet(i, j)) {
                        dsu.uni(i, j);
                        p[i][j] = 1;
                    }  else if(dsu.sameSet(i, j) && !dsu2.sameSet(i, j)) {
                        dsu2.uni(i, j);
                        p[i][j] = 1;
                    }
                }
            }
        }

        for(int i=0; i<n; i++) {
            for(int j=0; j<n; j++) {
                if(p[i][j] == 0) {
                    if(dsu.sameSet(i, j) || dsu2.sameSet(i, j)) return 0;
                } else {
                    if(!dsu.sameSet(i, j) || !dsu2.sameSet(i, j)) return 0;
                }
            }
        }

        build(B);
        return 1;
    }
}

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:59:22: warning: control reaches end of non-void function [-Wreturn-type]
   59 |     vector<int> cnt(3);
      |                      ^

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory 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 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 7 ms 1112 KB Output is correct
7 Correct 165 ms 22264 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory 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 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 7 ms 1112 KB Output is correct
7 Correct 165 ms 22264 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 6 ms 1116 KB Output is correct
13 Correct 152 ms 22092 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 856 KB Output is correct
17 Correct 71 ms 12036 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 39 ms 5864 KB Output is correct
21 Correct 162 ms 22304 KB Output is correct
22 Correct 151 ms 22004 KB Output is correct
23 Correct 160 ms 22024 KB Output is correct
24 Correct 154 ms 22164 KB Output is correct
25 Correct 62 ms 12112 KB Output is correct
26 Correct 66 ms 12040 KB Output is correct
27 Correct 167 ms 22064 KB Output is correct
28 Correct 163 ms 22296 KB Output is correct

Subtask #3
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Runtime error 1 ms 348 KB Execution killed with signal 11
5 Halted 0 ms 0 KB -

Subtask #4
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 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

# Verdict Execution time Memory 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 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 7 ms 1112 KB Output is correct
7 Correct 165 ms 22264 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 6 ms 1116 KB Output is correct
13 Correct 152 ms 22092 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 856 KB Output is correct
17 Correct 71 ms 12036 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 39 ms 5864 KB Output is correct
21 Correct 162 ms 22304 KB Output is correct
22 Correct 151 ms 22004 KB Output is correct
23 Correct 160 ms 22024 KB Output is correct
24 Correct 154 ms 22164 KB Output is correct
25 Correct 62 ms 12112 KB Output is correct
26 Correct 66 ms 12040 KB Output is correct
27 Correct 167 ms 22064 KB Output is correct
28 Correct 163 ms 22296 KB Output is correct
29 Correct 0 ms 344 KB Output is correct
30 Correct 1 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Runtime error 1 ms 348 KB Execution killed with signal 11
33 Halted 0 ms 0 KB -

Subtask #6
0 / 4.0

# Verdict Execution time Memory 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 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 7 ms 1112 KB Output is correct
7 Correct 165 ms 22264 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 6 ms 1116 KB Output is correct
13 Correct 152 ms 22092 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 856 KB Output is correct
17 Correct 71 ms 12036 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 39 ms 5864 KB Output is correct
21 Correct 162 ms 22304 KB Output is correct
22 Correct 151 ms 22004 KB Output is correct
23 Correct 160 ms 22024 KB Output is correct
24 Correct 154 ms 22164 KB Output is correct
25 Correct 62 ms 12112 KB Output is correct
26 Correct 66 ms 12040 KB Output is correct
27 Correct 167 ms 22064 KB Output is correct
28 Correct 163 ms 22296 KB Output is correct
29 Correct 0 ms 344 KB Output is correct
30 Correct 1 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Runtime error 1 ms 348 KB Execution killed with signal 11
33 Halted 0 ms 0 KB -