oj.uz

Submission #476967

# Submission time Handle Problem Language Result Execution time Memory
476967 2021-09-29T12:35:33 Z JovanB Game (IOI14_game) C++17
0 / 100
 1 ms 332 KB 
#include "game.h"
#include <bits/stdc++.h>
using namespace std;

const int N = 1500;

struct DSU{
    int n;
    int par[N+5];
    int edg[N+5][N+5];
    int outs[N+5];
    int sz[N+5];
    void init(int _n){
        n = _n;
        for(int i=1; i<=n; i++){
            par[i] = i;
            sz[i] = 1;
            outs[i] = 0;
            for(int j=1; j<=n; j++){
                edg[i][j] = 0;
            }
        }
    }
    int root(int x){ return (par[x] == x ? x : par[x] = root(par[x])); }
    bool povezi(int a, int b){
        a = root(a);
        b = root(b);
        if(a == b) return 1;
        if(sz[a] < sz[b]) swap(a, b);
        if(outs[a] != sz[a]*(n - sz[a]) - 1 && outs[b] != sz[b]*(n - sz[b]) - 1){
            outs[a]++, outs[b]++;
            edg[a][b]++, edg[b][a]++;
            return 0;
        }
        outs[a] -= edg[a][b];
        outs[b] -= edg[a][b];
        for(int i=1; i<=n; i++) edg[a][i] += edg[b][i], edg[i][a] += edg[i][b];
        outs[a] += outs[b];
        sz[a] += sz[b];
        par[b] = a;
        return 1;
    }
} dsu;

void initialize(int _n) {
    dsu.init(_n);
}

int hasEdge(int u, int v) {
    return dsu.povezi(u + 1, v + 1);
}

Subtask #1
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 304 KB Output is correct
4 Incorrect 1 ms 308 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #2
0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 0 ms 304 KB Output is correct
4 Incorrect 1 ms 332 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #3
0 / 58.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Incorrect 0 ms 332 KB Output isn't correct
5 Halted 0 ms 0 KB -