Submission #756479

#	Time	Username	Problem	Language	Result	Execution time	Memory
756479		Alkarat	Table Tennis (info1cup20_tabletennis)	C++14	100 / 100	130 ms	4664 KiB

tabletennis

#include <bits/stdc++.h>
using namespace std;
const int N=2e5+5;
int n,k,a[N];
map<int,int>ck;
bool check(int l,int r)
{
    int sum=a[l]+a[r],eli=0;
    vector<int>g;
    while(l<r)
    {
        if(a[l]+a[r]==sum) 
        {
            g.push_back(a[l]);
            g.push_back(a[r]);
            l++;
            r--;
        }
        else if(a[l]+a[r]>sum) 
        {
            r--;
            eli++;
        }
        else 
        {
            l++;
            eli++;
        }
        if(eli>k) return 0;
        if(g.size()==n)
        {
            sort(g.begin(),g.end());
            for(int e:g) cout<<e<<" ";
            return 1;
        }
    }
    return 0;
}
int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    cin>>n>>k;
    for(int i=1; i<=n+k; i++) cin>>a[i];
    for(int i=1; i<=k+1; i++) for(int j=n+k; j>=i+n-1; j--) if(check(i,j)) return 0;
}

Compilation message (stderr)

tabletennis.cpp: In function 'bool check(int, int)':
tabletennis.cpp:30:20: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   30 |         if(g.size()==n)
      |            ~~~~~~~~^~~

• Subtask 1: 11 / 11
• Subtask 2: 9 / 9
• Subtask 3: 14 / 14
• Subtask 4: 15 / 15
• Subtask 5: 9 / 9
• Subtask 6: 14 / 14
• Subtask 7: 15 / 15
• Subtask 8: 13 / 13