oj.uz

Submission #711622

# Submission time Handle Problem Language Result Execution time Memory
711622 2023-03-17T10:01:08 Z Filya Marriage questions (IZhO14_marriage) C++14
20 / 100
 27 ms 2928 KB 
/////////////////////include/////////////////////
//#include <bits/stdc++.h>
#define _CRT_SECURE_NO_WARNINGS
#include <iostream>
#include <string>
#include <algorithm>
#include <cmath>
#include <cstring>
#include <cassert>
#include <set>
#include <map>
#include <unordered_map>
#include <vector>
#include <stack>
#include <queue>
#include <iomanip>
#include <bitset>
#include <stdio.h>
#include <climits>
#include <numeric>
using namespace std;
//#include <ext/pb_ds/assoc_container.hpp>
//#include <ext/pb_ds/tree_policy.hpp>
//using namespace __gnu_pbds;
//template <typename T>
//using ordered_set = tree <T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
/////////////////////define/////////////////////
#define ci(x) if(x) cout << "YES" << '\n'; else cout << "NO" << '\n';
#define cii(x) if(check(x))
#define MOD 1000000007
#define MOD2 998244353
#define oo 1e9
#define ool 1e18L
#define pii pair<int, int>
#define pll pair<long long, long long>
#define mii map<int, int>
#define vi vector<int>
#define vpi vector<pair<int, int>>
#define vll vector <ll>
#define ff first
#define ss second
#define mp make_pair
#define ll long long
#define ld long double
#define pb push_back
#define eb emplace_back
#define pob pop_back
#define lb lower_bound
#define ub upper_bound
#define bs binary_search
#define sz(x) (int((x).size()))
#define all(x) (x).begin(), (x).end()
#define alll(x) (x), (x) + n
#define clr(x) (x).clear();
#define fri(x) for(int i = 0; i < x; ++i)
#define frj(x) for(int j = 0; j < x; ++j)
#define frp(x) for(int p = 0; p < x; ++p)
#define frr(a, b) for(int i = a; i < b; ++i)
#define frrj(a, b) for(int j = a; j < b; ++j)
#define fra(x) for(int i = 0; i < x; ++i) cin >> a[i];
#define frb(x) for(int i = 0; i < x; ++i) cin >> b[i];
#define frs(x) for(auto it = x.begin(); it != x.end(); ++it)
#define fr(x) for(auto it : x) //el
#define fastio ios_base::sync_with_stdio(false); cin.tie(0);
#define dbg(x) cerr << #x << ": " << x << endl;
#define ce(x) cout << x << endl;
#define uniq(x) x.resize(unique(all(x)) - x.begin()); //make all one after sorting
#define blt __builtin_popcount
/////////////////////print array, vector, deque, set, multiset, pair, map /////////////////////
void print(long long t) {cerr << t;}
void print(int t) {cerr << t;}
void print(string t) {cerr << t;}
void print(char t) {cerr << t;}
void print(double t) {cerr << t;}
void print(long double t) {cerr << t;}
void print(unsigned long long t) {cerr << t;}
template <class T, class V> void print(pair <T, V> p) {cerr << "{"; print(p.first); cerr << ","; print(p.second); cerr << "}";}
template <class T, class V> void print(T v[],V n) {cerr << "["; for(int i = 0; i < n; i++) {print(v[i]); cerr << " "; } cerr << "]"; cout << endl;}
template <class T> void print(vector <T> v) {cerr << "[ "; for (T i : v) {print(i); cerr << " ";} cerr << "]"; cout << endl;}
template <class T> void print(set <T> v) {cerr << "[ "; for (T i : v) {print(i); cerr << " ";} cerr << "]"; cout << endl;}
template <class T> void print(multiset <T> v) {cerr << "[ "; for (T i : v) {print(i); cerr << " ";} cerr << "]"; cout << endl;}
template <class T> void print(stack <T> v) {cerr << "[ "; stack<T> s = v; while(s.size()) {T i = s.top(); print(i); s.pop(); cerr << " ";} cerr << "]"; cout << endl;}
template <class T> void print(queue <T> v) {cerr << "[ "; queue<T> s = v; while(s.size()) {T i = s.front(); print(i); s.pop(); cerr << " ";} cerr << "]"; cout << endl;}
template <class T> void print(deque <T> v) {cerr << "[ "; deque<T> s = v; while(s.size()) {T i = s.front(); print(i); s.pop_front(); cerr << " ";} cerr << "]"; cout << endl;}
template <class T, class V> void print(map <T, V> v) {cerr << "[ "; for (auto i : v) {print(i); cerr << " ";} cerr << "]"; cout << endl;}
template <class T, class V> void print(unordered_map <T, V> v) {cerr << "[ "; for (auto i : v) {print(i); cerr << " ";} cerr << "]"; cout << endl;}
/////////////////////code/////////////////////
vi g[40005]; 
int mt[40005]; 
bool used[2005]; //axjikneri vra enq nayum misht
bool kuhn(int v, int l, int r) {
    if(used[v]) return 0;
    used[v] = 1;
    for(int u : g[v]) {
        if(u < l || u > r) continue;
        if(mt[u] == -1 || kuhn(mt[u], l, r)) {
            mt[u] = v;
            mt[v] = u;
            return 1;
        }
    }
    return 0;
}
int main() {
    fastio;
    int n, m, k, x, y;
    cin >> n >> m >> k;
    fri(k) {
        cin >> x >> y; x += m;
        g[x].pb(y);
        g[y].pb(x);
    }
    n += m;
    int l = 2 * m, r = n, ans = -1, mid; //l=2m qani vor gone m hat arqa piti lini
    while(l <= r) {
        mid = (l + r) / 2;
        frr(1, 1 + n) {
            mt[i] = -1;
            used[i] = 0;
        }
        bool f = 1;
        frr(1, 1 + m) 
            if(!kuhn(i, m+1, mid)) {
                f = 0;
                break;
            }
        if(f) {
            ans = mid;
            r = mid - 1;
        } else l = mid + 1;
    }
    if(ans == -1) {
        cout << 0;
        return 0;
    }
    int answ = n - ans + 1; //1ov sksvoxneri tivy
    frr(1, 1 + n) {
        mt[i] = -1;
        used[i] = 0;
    }
    frr(1, 1 + m)
        kuhn(i, m+1, ans);
    // print(mt, n + 1);
    for(int i = m + 1; i <= n; i++) { //i-rdy hanum enq mer kandidatneric
        if(mt[i] == -1) {
            answ += n - ans + 1; //ans ic sksac minchev n+m bolory bavarar en
            continue;
        }
        int girl = mt[i];
        mt[girl] = -1;
        mt[i] = -1;
        while(ans <= n) {
            frrj(1, 1 + m) used[i] = 0;
            if(kuhn(girl, i + 1, ans)) {
                answ += n - ans + 1;
                break;
            }
            // dbg(ans) 
            ans++;
        }
        if(ans == n + 1) break;
    }
    cout << answ;
    return 0;
}

//	           ♥ ♥ ♥  ♥  ♥    ♥   ♥    ♥
//	           ♥      ♥  ♥     ♥ ♥    ♥ ♥
//	           ♥ ♥ ♥  ♥  ♥      ♥    ♥   ♥
//	           ♥      ♥  ♥      ♥   ♥ ♥ ♥ ♥
//	           ♥      ♥  ♥ ♥ ♥  ♥  ♥       ♥
//
//        God loves Fil, Fil accepts God's will

Subtask #1
20.0 / 100.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 1236 KB Output isn't correct
2 Incorrect 1 ms 1236 KB Output isn't correct
3 Incorrect 1 ms 1236 KB Output isn't correct
4 Incorrect 1 ms 1236 KB Output isn't correct
5 Correct 1 ms 1236 KB Output is correct
6 Correct 1 ms 1236 KB Output is correct
7 Incorrect 1 ms 1236 KB Output isn't correct
8 Correct 1 ms 1236 KB Output is correct
9 Correct 1 ms 1236 KB Output is correct
10 Correct 1 ms 1236 KB Output is correct
11 Incorrect 1 ms 1236 KB Output isn't correct
12 Correct 1 ms 1236 KB Output is correct
13 Incorrect 1 ms 1236 KB Output isn't correct
14 Incorrect 1 ms 1236 KB Output isn't correct
15 Incorrect 1 ms 1236 KB Output isn't correct
16 Incorrect 1 ms 1236 KB Output isn't correct
17 Incorrect 1 ms 1236 KB Output isn't correct
18 Incorrect 1 ms 1236 KB Output isn't correct
19 Incorrect 1 ms 1236 KB Output isn't correct
20 Incorrect 1 ms 1236 KB Output isn't correct
21 Correct 1 ms 1236 KB Output is correct
22 Incorrect 1 ms 1236 KB Output isn't correct
23 Incorrect 1 ms 1236 KB Output isn't correct
24 Incorrect 1 ms 1236 KB Output isn't correct
25 Incorrect 3 ms 1364 KB Output isn't correct
26 Incorrect 1 ms 1236 KB Output isn't correct
27 Correct 1 ms 1236 KB Output is correct
28 Incorrect 1 ms 1236 KB Output isn't correct
29 Incorrect 2 ms 1320 KB Output isn't correct
30 Incorrect 2 ms 1364 KB Output isn't correct
31 Incorrect 9 ms 1800 KB Output isn't correct
32 Incorrect 2 ms 1364 KB Output isn't correct
33 Correct 1 ms 1236 KB Output is correct
34 Incorrect 1 ms 1236 KB Output isn't correct
35 Incorrect 16 ms 2340 KB Output isn't correct
36 Incorrect 15 ms 2260 KB Output isn't correct
37 Incorrect 10 ms 1892 KB Output isn't correct
38 Incorrect 15 ms 2472 KB Output isn't correct
39 Incorrect 2 ms 1364 KB Output isn't correct
40 Correct 4 ms 1492 KB Output is correct
41 Incorrect 5 ms 1620 KB Output isn't correct
42 Incorrect 6 ms 1836 KB Output isn't correct
43 Incorrect 10 ms 2004 KB Output isn't correct
44 Incorrect 16 ms 2440 KB Output isn't correct
45 Incorrect 8 ms 2100 KB Output isn't correct
46 Incorrect 27 ms 2820 KB Output isn't correct
47 Incorrect 20 ms 2784 KB Output isn't correct
48 Incorrect 18 ms 2776 KB Output isn't correct
49 Incorrect 24 ms 2928 KB Output isn't correct
50 Incorrect 2 ms 1492 KB Output isn't correct