Submission #339146

#	Time	Username	Problem	Language	Result	Execution time	Memory
339146		cheissmart	Table Tennis (info1cup20_tabletennis)	C++14	87 / 100	3065 ms	4712 KiB

tabletennis

#include <bits/stdc++.h>
#define IO_OP std::ios::sync_with_stdio(0); std::cin.tie(0);
#define F first
#define S second
#define V vector
#define PB push_back
#define MP make_pair
#define EB emplace_back
#define ALL(v) (v).begin(), (v).end()
#define debug(x) cerr << "Line(" << __LINE__ << ") -> " << #x << " is " << x << endl

using namespace std;

typedef long long ll;
typedef pair<int, int> pi;
typedef V<int> vi;

const int INF = 1e9 + 7;

signed main()
{
	IO_OP;

	int n, k;
	cin >> n >> k;
	vi a(n + k);
	for(int i = 0; i < n + k; i++) cin >> a[i];
	for(int left = 0; left <= k; left++) {
		for(int right = 0; right + left <= k; right++) {
			int l = left, r = n + k - right - 1;
			int sum = a[l] + a[r];
			vi ans;
			while(l < r && ans.size() < n) {
				if(a[l] + a[r] == sum) {
					ans.PB(a[l]);
					ans.PB(a[r]);
					l++, r--;
				}
				else if(a[l] + a[r] < sum) l++;
				else r--;
			}
			sort(ALL(ans));
			if(ans.size() == n) {
				for(int i:ans) cout << i << " ";
				cout << endl;
				return 0;
			}
		}
	}

}

Compilation message (stderr)

tabletennis.cpp: In function 'int main()':
tabletennis.cpp:33:30: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   33 |    while(l < r && ans.size() < n) {
      |                   ~~~~~~~~~~~^~~
tabletennis.cpp:43:18: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   43 |    if(ans.size() == n) {
      |       ~~~~~~~~~~~^~~~

• 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: 0 / 13