Submission #524640

#	Time	Username	Problem	Language	Result	Execution time	Memory
524640		amin	Table Tennis (info1cup20_tabletennis)	C++14	100 / 100	98 ms	5720 KiB

tabletennis

#include <bits/stdc++.h>

using namespace std;

int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
long n,k;
cin>>n>>k;
long long a[n+k];
for(long i=0;i<n+k;i++)
{
    cin>>a[i];


}
long long sum;
long long j=0;
long long ans=0;
long long p=0;
long long l,r;
for(long i=0;i<=k;i++)
{
    for(long y=i+n-1;y<n+k;y++)
    {
        j=0;
        ans=0;
        p=0;
        sum=a[i]+a[y];

        r=y-1;
        l=i+1;
        ans=2;
        while(l<r)
        {



            if(p>k)
            {
                break;
            }
            if(a[l]+a[r]>sum)
            {
                r--;
                p++;
                continue;
            }
            if(a[l]+a[r]<sum)
            {
                p++;
                l++;
                continue;
            }
            if(a[l]+a[r]==sum)
            {
                ans+=2;

                l++;
                r--;
                if(ans>=n)
            {
                j=1;

                break;
            }
                continue;
            }
        }
        if(j==1)
        {
            break;
        }
    }
    if(j==1)
    {
        break;
    }
}

l=0;
r=n+k-1;
ans=0;
p=0;
vector<long long>v;
while(l<r)
        {




            if(a[l]+a[r]>sum)
            {
                r--;

                continue;
            }
            if(a[l]+a[r]<sum)
            {
                p++;
l++;
                continue;
            }
            if(a[l]+a[r]==sum)
            {
                ans+=2;
     v.push_back(a[l]);
     v.push_back(a[r]);
                l++;
                r--;
                if(ans>=n)
            {
                j=1;

                break;
            }
                continue;
            }
        }
        sort(v.begin(),v.end());
        for(long i=0;i<n;i++)
        {
            cout<<v[i]<<' ';
        }



}

Compilation message (stderr)

tabletennis.cpp: In function 'int main()':
tabletennis.cpp:106:13: warning: 'sum' may be used uninitialized in this function [-Wmaybe-uninitialized]
  106 |             if(a[l]+a[r]==sum)
      |             ^~

• 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