Submission #1160882

#	Time	Username	Problem	Language	Result	Execution time	Memory
1160882		JahonaliX	Game (IOI14_game)	C++20	Compilation error	0 ms	0 KiB

game

#include <bits/stdc++.h>

using namespace std;

struct dsu {
    int n;
    vector<int> p, c, f;
    dsu() {}
    dsu(int m) {
        n = m;
        p.assign(n, 0);
        c.assign(n, 1);
        f.assign(n, 0);
        iota(p.begin(), p.end(), 0);
    }
    int find(int x) {
        if (x == p[x]) return x;
        return p[x] = find(p[x]);
    }
    void merge(int a, int b) {
        p[b] = a;
        f[a] = f[a] + f[b] - c[a] * c[b] * 2;
        c[a] += c[b];
    }
};

int n;
dsu d;

void initialize(int N) { n = N, d = dsu(n), vis.assign(n, vector<bool>(n)); }

int hasEdge(int u, int v)  {
    u = d.find(u);
    v = d.find(v);
    if (u == v) return 0;
    d.f[u]++;
    d.f[v]++;
    if (d.f[u] == d.c[u] * (n - d.c[u]) || d.f[v] == d.c[v] * (n - d.c[u])) {
        d.merge(u, v);
        return 1;
    } 
    return 0;
}

Compilation message (stderr)

game.cpp: In function 'void initialize(int)':
game.cpp:30:45: error: 'vis' was not declared in this scope
   30 | void initialize(int N) { n = N, d = dsu(n), vis.assign(n, vector<bool>(n)); }
      |                                             ^~~