Submission #301551

#	Time	Username	Problem	Language	Result	Execution time	Memory
301551		qiangbao	Carnival Tickets (IOI20_tickets)	C++14	Compilation error	0 ms	0 KiB

tickets

#include <iostream>
#include <vector>
#include "tickets.h"

#define pb push_back

using namespace std;

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

int n, m, kk;
vector<vector<int> > a;
int beg[1501], endi[1501];

vector<pii> subt;

ll ansval=0;
vector<int> plamt;
vector<vector<int> > ans;

ll find_maximum(int kkk, vector<vector<int> > x)
{
    int i, j;
    
    n=x.size(), m=x[1].size(), kk=kkk;
    a=x;
    for(i=0;i<m;i++)
        plamt.pb(-1);
    for(i=0;i<n;i++)
        ans.pb(plamt);
    
    for(i=0;i<n;i++)
        endi[i]=m-1;
    
    for(i=0;i<kk;i++){
        subt.clear();
        for(j=0;j<n;j++){
            ansval+=a[j][endi[j]];
            subt.pb({a[j][endi[j]]+a[j][beg[j]], j});
        }
        sort(subt.begin(), subt.end());
        for(j=0;j<n/2;j++){
            ansval-=subt[j].first;
            ans[subt[j].second][beg[subt[j].second]]=i;
            beg[subt[j].second]++;
        }
        for(j=n/2;j<n;j++){
            ans[subt[j].second][endi[subt[j].second]]=i;
            endi[subt[j].second]--;
        }
    }
    
    allocate_tickets(ans);
    return ansval;
}

//int main()
//{
//    find_maximum(2, {{0, 2, 5},{1, 1, 3}});
//    find_maximum(1, {{5, 9}, {1, 4}, {3, 6}, {2, 7}});
//}

Compilation message (stderr)

tickets.cpp: In function 'll find_maximum(int, std::vector<std::vector<int> >)':
tickets.cpp:42:9: error: 'sort' was not declared in this scope; did you mean 'qsort'?
   42 |         sort(subt.begin(), subt.end());
      |         ^~~~
      |         qsort