Submission #827544

#	Time	Username	Problem	Language	Result	Execution time	Memory
827544		minhcool	Carnival Tickets (IOI20_tickets)	C++17	0 / 100	1 ms	212 KiB

tickets

//#define local
#ifndef local
#include "tickets.h"
#endif
#include<bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
using namespace __gnu_pbds;
using namespace std;
 
#define ll long long
#define fi first
#define se second
#define pb push_back
#define mp make_pair
 
typedef pair<ll, ll> ii;
typedef pair<ii, ll> iii;
typedef pair<ii, ii> iiii;
 
const ll N = 3e5 + 5;
 
const ll oo = 1e18 + 7, mod = 1e9 + 7;
 
mt19937 rng(1);
 
ll rnd(ll l, ll r){
	ll temp = rng() % (r - l + 1);
	return abs(temp) + l;
}
 
ll n, m, itr[N];
 
ll find_maximum(int k, vector<vector<int>> x){
    n = x.size(), m = x[0].size();
    ll sum = 0;
    ll ans = 0;
    for(ll i = 0; i < n; i++){
        for(ll j = 0; j < k; j++) ans += (ll)x[i][m - j - 1];
        itr[i] = 0;
    }
    priority_queue<ii, vector<ii>> pq;
    for(ll i = 0; i < n; i++) pq.push({-((ll)x[i][0] + x[i][m - k]), i});
    for(ll i = 1; i <= (n * k)/2; i++){
        ii temp = pq.top();
        pq.pop();
        itr[temp.se]++;
        ans += temp.fi;
        if(itr[temp.se] < k) pq.push({-((ll)x[temp.se][itr[temp.se]] + x[temp.se][m - k + itr[temp.se]]), temp.se});
    }
    vector<vector<int>> assign;
    assign.resize(n);
    for(ll i = 0; i < n; i++){
        assign[i].resize(m);
        for(ll j = 0; j < m; j++) assign[i][j] = -1;
        ll cnt = 0;
        for(ll j = 0; j < itr[i]; j++){
            assign[i][j] = cnt;
            cnt++;
        }
        for(ll j = itr[i]; j < k; j++){
            assign[i][m - k + j] = cnt;
            cnt++;
        }
    }
    allocate_tickets(assign);
    return sum;
}
 
#ifdef local
void process(){
 
}
 
signed main(){
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	ll t;
	cin >> t;
	while(t--) process();
}
#endif

• Subtask 1: 0 / 11
• Subtask 2: 0 / 16
• Subtask 3: 0 / 14
• Subtask 4: 0 / 14
• Subtask 5: 0 / 12
• Subtask 6: 0 / 23
• Subtask 7: 0 / 10