Submission #523065

#	Time	Username	Problem	Language	Result	Execution time	Memory
523065		Farhan_HY	Table Tennis (info1cup20_tabletennis)	C++14	72 / 100	3085 ms	486388 KiB

tabletennis

#include <bits/stdc++.h>
#define int long long
#define float double
#define pb push_back
#define F first
#define S second
#define T int t; cin >> t; while(t--)
#define IOS ios::sync_with_stdio(); cin.tie(0); cout.tie(0);

using namespace std;

const int inf = 8e18;
const int N = 1e6 + 6;
const int M = 1e3 + 3;
const int mod = 1e9 + 7;
const float pi = atan(1) * 4;
int a[N];
int n, m;
vector<int> ans[2];
map<int, bool> mp;

main()
{
    cin >> n >> m;
    for(int i = 0; i < n + m; i++)
        cin >> a[i], mp[a[i]] = 1;
    int sum1 = -1;
    for(int i = 0; i < m + 5; i++)
    {
        for(int j = max(i + 1, n - 5); j < n + m; j++)
        {
            int x = 0;
            int sum2 = a[i] + a[j];
            for(int k = 0; k < n + m; k++)
                if(mp[sum2 - a[k]])
                    x++;
            if(x >= n)
            {
                sum1 = sum2;
                break;
            }
        }
        if(sum1 != -1)
            break;
    }
    for(int i = 0; i < n + m; i++)
    {
        if(mp[sum1 - a[i]])
        {
            ans[0].pb(a[i]);
            ans[1].pb(sum1 - a[i]);
        }
        if(ans[0].size() == n / 2)
            break;
    }
    for(auto x: ans[0])
        cout << x << ' ';
    reverse(ans[1].begin(), ans[1].end());
    for(auto x: ans[1])
        cout << x << ' ';
}

Compilation message (stderr)

tabletennis.cpp:22:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   22 | main()
      | ^~~~
tabletennis.cpp: In function 'int main()':
tabletennis.cpp:53:26: warning: comparison of integer expressions of different signedness: 'std::vector<long long int>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
   53 |         if(ans[0].size() == n / 2)
      |            ~~~~~~~~~~~~~~^~~~~~~~

• 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: 0 / 15
• Subtask 8: 0 / 13