Submission #1080044

#	Time	Username	Problem	Language	Result	Execution time	Memory
1080044		GrindMachine	Carnival Tickets (IOI20_tickets)	C++17	27 / 100	397 ms	81772 KiB

tickets

#include <bits/stdc++.h>
using namespace std;

typedef long long int ll;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;

#define pb push_back
#define endl '\n'
#define conts continue
#define sz(a) (int)a.size()
#define ff first
#define ss second
#define all(a) a.begin(),a.end()
#define rall(a) a.rbegin(),a.rend()

#define rep(i,n) for(int i = 0; i < n; ++i)
#define rep1(i,n) for(int i = 1; i <= n; ++i)
#define rev(i,s,e) for(int i = s; i >= e; ++i)
#define trav(i,a) for(auto &i : a)

template<typename T>
void amin(T &x, T y){
    x = min(x,y);
}

template<typename T>
void amax(T &x, T y){
    x = max(x,y);
}

template<typename A,typename B>
string to_string(pair<A,B> p);

string to_string(const string &s){
    return "'"+s+"'";
}

string to_string(const char* s){
    return to_string((string)s);
}

string to_string(bool b){
    return b?"true":"false";
}

template<typename A>
string to_string(A v){
    string res = "{";
    trav(x,v){
        res += to_string(x)+",";
    }
    if(res.back() == ',') res.pop_back();
    res += "}";
    return res;
}

template<typename A,typename B>
string to_string(pair<A,B> p){
    return "("+to_string(p.ff)+","+to_string(p.ss)+")";
}

#define debug(x) cout << "[" << #x << "]: "; cout << to_string(x) << endl

const int MOD = 1e9 + 7;
const int N = 1e5 + 5;
const int inf1 = 1e9 + 5;
const ll inf2 = (ll)1e18 + 5;

#include "tickets.h"

long long find_maximum(int k, std::vector<std::vector<int>> a) {
	int n = a.size();
	int m = a[0].size();

	vector<deque<int>> dq(n);
	rep(i,n) rep(j,m) dq[i].pb(j);
	vector<vector<int>> ans(n,vector<int>(m,-1));

	ll cost = 0;

	rep(iter,k){
		vector<pll> options;

		rep(i,n){
			ll f = dq[i].front(), b = dq[i].back();
			cost -= a[i][f];
			options.pb({a[i][b]+a[i][f],i});
		}

		sort(rall(options));
		rep(ind,n){
			auto [val,i] = options[ind];
			ll f = dq[i].front(), b = dq[i].back();

			if(ind < n/2){
				cost += val;
				ans[i][b] = iter;
				dq[i].pop_back();
			}	
			else{
				ans[i][f] = iter;
				dq[i].pop_front();
			}		
		}
	}

	allocate_tickets(ans);
	return cost;

	// std::vector<std::vector<int>> answer;
	// for (int i = 0; i < n; i++) {
	// 	std::vector<int> row(m);
	// 	for (int j = 0; j < m; j++) {
	// 		if (j < k) {
	// 			row[j] = j;
	// 		} else {
	// 			row[j] = -1;
	// 		}
	// 	}
	// 	answer.push_back(row);
	// }
	// allocate_tickets(answer);
	// return 1;
}

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