Submission #691386

#	Time	Username	Problem	Language	Result	Execution time	Memory
691386		Aiperiii	Table Tennis (info1cup20_tabletennis)	C++14	100 / 100	71 ms	5724 KiB

tabletennis

#include <bits/stdc++.h>
using namespace std;
int n,k;
long long a[150401];
void check(int begin,int end){
    vector <long long> ans;
    int l=begin+1;
    int r=end-1;
    int bad=begin+n+k+1-end;
    long long t=a[r]+a[l];
    while(l<r){
        long long c=a[r]+a[l];
        if(c==t){
            ans.push_back(a[r]);
            ans.push_back(a[l]);
            l++;
            r--;
            if(ans.size()==n){
                sort(ans.begin(),ans.end());
                for(int i=0;i<ans.size();i++){
                    cout<<ans[i]<<" ";
                }
                exit(0);
            }
        }
        else if(c<t){
            l++;
            bad++;
        }
        else{
            r--;
            bad++;
        }
        if(bad>k){
            return;
        }
    }
}
int main(){
    cin.tie(0); 
    ios_base::sync_with_stdio(0);
    cin>>n>>k;
    for(int i=1;i<=n+k;i++){
        cin>>a[i];  
    }
    for(int i=0;i<=k;i++){
        for(int j=0;j<=k-i;j++){
            check(i,n+k+1-j);
        }
    }
}

Compilation message (stderr)

tabletennis.cpp: In function 'void check(int, int)':
tabletennis.cpp:18:26: warning: comparison of integer expressions of different signedness: 'std::vector<long long int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   18 |             if(ans.size()==n){
      |                ~~~~~~~~~~^~~
tabletennis.cpp:20:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   20 |                 for(int i=0;i<ans.size();i++){
      |                             ~^~~~~~~~~~~

• 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