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Submission #1041593

# Submission time Handle Problem Language Result Execution time Memory
1041593 2024-08-02T06:02:11 Z vjudge1 Izlet (COI19_izlet) C++17
18 / 100
 986 ms 53276 KB 
#include <bits/stdc++.h>
using namespace std;

const int N = 3e3 + 100;
int n, g, mat[N][N], par[N], col[N], cur_col;
set<int> reps;
vector<int> S[N];
vector<pair<int, int>> edges;
bool edge[N][N];

int root(int v){
    return (par[v] == -1 ? v : par[v] = root(par[v]));
}

void merge(int u, int v){
    if ((u = root(u)) == (v = root(v)))
        return;

    if (S[u].size() > S[v].size())
        swap(u, v);

    edges.push_back({u, v});
    edge[u][v] = edge[v][u] = 1;
    reps.erase(u);
    par[u] = v;
    for (int x : S[u]){
        par[x] = v;
        S[v].push_back(x);
    }
    S[u].clear();
}

int main(){
    cin >> g >> n;
    for (int i = 1; i <= n; i ++){
        par[i] = -1, S[i] = {i};
        reps.insert(i);
    }
    for (int i = 1; i <= n; i ++)
        for (int j = 1; j <= n; j ++)
            cin >> mat[i][j];
    for (int i = 1; i <= n; i ++)
        for (int j = i + 1; j <= n; j ++)
            if (mat[i][j] == 1)
                merge(i, j);

    int p = *reps.begin();
    for (int v : reps){
        col[v] = (p == v) ? 1 : 2;
        for (int x : S[v])
            col[x] = col[v];
        if (p != v) edges.push_back({p, v});
    }


    for (int i = 1; i <= n; i ++)
        cout << col[i] << " ";
    cout << endl;
    for (auto [u, v] : edges)
        cout << u << " " << v << endl;
}

Subtask #1
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 781 ms 49256 KB Output is correct
3 Correct 986 ms 45284 KB Output is correct
4 Correct 843 ms 53276 KB Output is correct
5 Correct 887 ms 53156 KB Output is correct

Subtask #2
0 / 25.0

# Verdict Execution time Memory Grader output
1 Incorrect 860 ms 46516 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 781 ms 49256 KB Output is correct
3 Correct 986 ms 45284 KB Output is correct
4 Correct 843 ms 53276 KB Output is correct
5 Correct 887 ms 53156 KB Output is correct
6 Incorrect 860 ms 46516 KB Output isn't correct
7 Halted 0 ms 0 KB -