제출 #366276

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
366276		wiwiho	Teoretičar (COCI18_teoreticar)	C++14	13 / 130	12070 ms	41656 KiB

teoreticar

#include <bits/stdc++.h>

#define eb emplace_back
#define printv(a, b) {\
bool ps = false;\
for(auto pv : a){\
    if(ps) b << ' '; ps = true;\
    b << pv;\
}\
b << "\n";\
}
#define iter(a) a.begin(), a.end()
#define lsort(a) sort(iter(a))
#define mp make_pair
#define F first
#define S second

using namespace std;

typedef long long ll;
using pii = pair<int, int>;

vector<set<int>> g;
vector<int> mt;
vector<pii> e;
vector<int> ans;

int another(int id, int t){
    return e[id].F ^ e[id].S ^ t;
}

vector<bool> vst;
bool dfs(int now){
    //cerr << "dfs " << now << "\n";
    vst[now] = true;
    for(int i : g[now]){
        int v = another(i, now);
        if(mt[v] == -1 || (!vst[another(mt[v], v)] && dfs(another(mt[v], v)))){
            mt[v] = i;
            //cerr << "match " << now <<  " " << v << " " << i << "\n";
            return true;
        }
    }
    return false;
}

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

    int l, r, m;
    cin >> l >> r >> m;
    g.resize(l + 1);
    mt.resize(r + 1);
    e.resize(m);
    ans.resize(m);
    vst.resize(l + 1);
    for(int i = 0; i < m; i++){
        int u, v;
        cin >> u >> v;
        e[i] = mp(u, v);
        g[u].insert(i);
    }

    int cnt = 0;
    while(true){
        fill(iter(mt), -1);
        fill(iter(vst), false);
        bool ok = false;
        //cerr << "test\n";
        for(int i = 1; i <= l; i++){
            //cerr << "qq\n";
            if(!vst[i] && dfs(i)) ok = true;
        }
        if(!ok) break;
        //printv(mt, cerr);
        cnt++;
        for(int i = 1; i <= r; i++){
            if(mt[i] == -1) continue;
            int id = mt[i];
            g[another(id, i)].erase(id);
            ans[id] = cnt;
        }
    }
    cout << cnt << "\n";
    for(int i = 0; i < m; i++) cout << ans[i] << "\n";

    return 0;
}

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• Subtask 2: 13 / 13
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