Submission #717439

#	Time	Username	Problem	Language	Result	Execution time	Memory
717439		vjudge1	Table Tennis (info1cup20_tabletennis)	C++17	0 / 100	3061 ms	1364 KiB

tabletennis

#include <bits/stdc++.h>
using namespace std;
#define int long long
#define endl '\n'
#define all(x) x.begin(),x.end()
const int MOD = 1e9 + 7, SZ = 1e5 + 10, MX = 1e9;
vector<int> vec;
int ans = 0;
void solve(int an, int am, int m, int a, int b, int i){
    if(an == 0 && am == 0){
        if(a == b)
            ans = m;
        return;
    }
    if(i == vec.size())
        return;
    // cout << i << endl;
    solve(an-1, am, m + (1 << i), a + vec[i], b, i+1);
    solve(an, am-1, m + (1 << i), a, b + vec[i], i+1);
    solve(an, am, m, a, b, i+1);
}
signed main(){
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    int n, k;
    cin >> n >> k;
    int arr[n + k];
    for(int &i : arr)
        cin >> i;
    map<int, int> mp;
    for(int i=0;i<k;i++){
        if(mp[arr[i]])
            continue;
        vec.push_back(arr[i]);
    }
    reverse(arr, arr+n+k);
    for(int i=0;i<k;i++){
        if(mp[arr[i]])
            continue;
        vec.push_back(arr[i]);
    }
    sort(all(vec));
    solve(n/2, n/2, 0, 0, 0, 0);
    for(int i=0;i<vec.size();i++){
        if((1 << i) & ans)
            cout << vec[i] << ' ';
    }
    return 0;
}
// https://www.youtube.com/watch?v=zL32whN6p0A&ab_channel=HeidiAdel-CartoonWorld

Compilation message (stderr)

tabletennis.cpp: In function 'void solve(long long int, long long int, long long int, long long int, long long int, long long int)':
tabletennis.cpp:15:10: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   15 |     if(i == vec.size())
      |        ~~^~~~~~~~~~~~~
tabletennis.cpp: In function 'int main()':
tabletennis.cpp:43:18: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   43 |     for(int i=0;i<vec.size();i++){
      |                 ~^~~~~~~~~~~

• 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