Submission #518086

#	Time	Username	Problem	Language	Result	Execution time	Memory
518086		Ronin13	Table Tennis (info1cup20_tabletennis)	C++14	0 / 100	3096 ms	844 KiB

tabletennis

#include<bits/stdc++.h>
#define ll long long
#define ull unsigned ll
#define pb push_back
#define f first
#define s second
#define pii pair<int,int>
#define pll pair<ll,ll>
#define epb emplace_back
#define inf 1e9+1
#define linf 1e18+11
using namespace std;

unordered_map<int,int>used;

int main(){
    int n;cin>>n;
    int k;cin>>k;
    int a[n+k+1];
    for(int i=1;i<=n+k;i++){
        cin>>a[i];
    }
    sort(a+1,a+1+n+k);
    vector<int>vec;
    bool ind=false;
    for(int i=0;i<=k;i++){
        for(int j=0;j<=k-i;j++){
            int l=i+2,r=n+k-j-1;
            int ss=a[i+1]+a[n+k-j];
            int cnt=0;
            vec.clear();
            vec.pb(i+1),vec.pb(n+k-j);
            while(l<r){
                if(a[l]+a[r]==ss)vec.pb(l),vec.pb(r),r--,l++;
                else{
                if(a[l]+a[r]<ss)l++,cnt++;
                else if(a[l]+a[r]<ss)r--,cnt++;}
            }
            if(vec.size()>=n){
              while(vec.size()>n)vec.pop_back();
                sort(vec.begin(),vec.end());
                for(int p=0;p<n;p++)cout<<a[vec[p]]<<' ';
                return 0;
            }
        }
    }
}

Compilation message (stderr)

tabletennis.cpp: In function 'int main()':
tabletennis.cpp:39:26: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   39 |             if(vec.size()>=n){
      |                ~~~~~~~~~~^~~
tabletennis.cpp:40:31: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   40 |               while(vec.size()>n)vec.pop_back();
      |                     ~~~~~~~~~~^~
tabletennis.cpp:25:10: warning: unused variable 'ind' [-Wunused-variable]
   25 |     bool ind=false;
      |          ^~~

• Subtask 1: 0 / 11
• Subtask 2: 0 / 9
• Subtask 3: 0 / 14
• Subtask 4: 0 / 15
• Subtask 5: 0 / 9
• Subtask 6: 0 / 14
• Subtask 7: 0 / 15
• Subtask 8: 0 / 13