Submission #380916

#	Time	Username	Problem	Language	Result	Execution time	Memory
380916		Pichon5	Carnival Tickets (IOI20_tickets)	C++17	0 / 100	1 ms	364 KiB

tickets

#include "tickets.h"
#include<bits/stdc++.h>
#define lcm(a,b) (a/__gcd(a,b))*b
#define fast ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
#define ll long long
#define vi vector<int>
#define vll vector<ll>
#define pb push_back
#define F first
#define S second
#define mp make_pair
using namespace std;
long long find_maximum(int k,vector<vi> x) {
	int n = x.size();
	int m = x[0].size();
	ll res=0;
	ll sum=0;
	vector<vi>M(n,vi(m,-1));
    vector<pair<int,int> >ind(n+1);
    vector<pair<int,int> >cant(n+1);//blanco y negro
    for(int i=0;i<n;i++)ind[i]={0,m-1};
    for(int i=0;i<n;i++){
        int a=0,b=0;
        for(int l=0;l<m;l++){
            if(x[i][l]==0){
                a++;
            }else{
                b++;
            }
        }
        cant[i]={a,b};
    }
    vi v;
    for(int i=0;i<k;i++){
        v.clear();
        int a=0,b=0,aux=0;
        for(int l=0;l<n;l++){
            if(cant[l].S==0){
                a++;
                M[l][ind[l].F]=i;
                ind[l].F++;
                continue;
            }
            if(cant[l].F==0){
                b++;
                M[l][ind[l].S]=i;
                ind[l].S--;
                continue;
            }
            v.pb(l);
        }
        for(int l=0;l<v.size();l++){
            if(a<=b){
                a++;
                M[v[l]][ind[v[l]].S]=i;
                cant[v[l]].S--;
            }else{
                b++;
                M[v[l]][ind[v[l]].F]=i;
                cant[v[l]].F--;
            }
        }
        res+=min(a,b);
    }
    allocate_tickets(M);
	return res;
}

Compilation message (stderr)

tickets.cpp: In function 'long long int find_maximum(int, std::vector<std::vector<int> >)':
tickets.cpp:52:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   52 |         for(int l=0;l<v.size();l++){
      |                     ~^~~~~~~~~
tickets.cpp:36:21: warning: unused variable 'aux' [-Wunused-variable]
   36 |         int a=0,b=0,aux=0;
      |                     ^~~
tickets.cpp:17:5: warning: unused variable 'sum' [-Wunused-variable]
   17 |  ll sum=0;
      |     ^~~

• 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