제출 #228249

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
228249		VEGAnn	Teoretičar (COCI18_teoreticar)	C++14	0 / 130	12024 ms	89848 KiB

teoreticar

#include <bits/stdc++.h>
#define pii pair<int,int>
#define ft first
#define sd second
#define MP make_pair
#define sz(x) ((int)x.size())
using namespace std;
typedef long long ll;
const int N = 5010;
const int M = 500100;
const int oo = 2e9;
int col[M], l, r, mrk[2][N][N], m, ans = oo, nm[M], x[M], y[M], tt = 0, X, deg[2][N];

mt19937 rnd(chrono::system_clock().now().time_since_epoch().count());

void potential(){
    shuffle(nm, nm + m, rnd);

    int cur = 0;

    tt++;

    for (int it = 0; it < m; it++){
        int i = nm[it];

        for (int c = 0; ; c++)
            if (mrk[0][x[i]][c] < tt && mrk[1][y[i]][c] < tt){
                col[i] = c;
                cur = max(cur, c);

                if (cur >= X) return;

                mrk[0][x[i]][c] = mrk[1][y[i]][c] = tt;
                break;
            }
    }

    cout << cur + 1 << '\n';

    for (int i = 0; i < m; i++)
        cout << col[i] + 1 << '\n';

    exit(0);
}

int main(){
    ios_base::sync_with_stdio(0); cin.tie(0);

    cin >> l >> r >> m;

    for (int i = 0; i < m; i++){
        cin >> x[i] >> y[i];
        x[i]--; y[i]--;
        deg[0][x[i]]++;
        deg[1][y[i]]++;
        nm[i] = i;
    }

    int mex = 0;

    for (int i = 0; i < max(l, r); i++) {
        mex = max(mex, deg[0][i]);
        mex = max(mex, deg[1][i]);
    }

    X = 1;

    while (X < mex) X += X;

    for (;;)
        potential();

    return 0;
}

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