oj.uz

Submission #423985

# Submission time Handle Problem Language Result Execution time Memory
423985 2021-06-11T14:58:34 Z pavement Table Tennis (info1cup20_tabletennis) C++17
78 / 100
 3000 ms 7340 KB 
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace std;
using namespace __gnu_pbds;
#ifdef _WIN32
#define getchar_unlocked _getchar_nolock
#endif
//#define int long long
#define mp make_pair
#define mt make_tuple
#define pb push_back
#define ppb pop_back
#define eb emplace_back
#define g0(a) get<0>(a)
#define g1(a) get<1>(a)
#define g2(a) get<2>(a)
#define g3(a) get<3>(a)
mt19937 rng(28392);
typedef double db;
typedef long long ll;
typedef long double ld;
typedef pair<int, int> ii;
typedef tuple<int, int, int> iii;
typedef tuple<int, int, int, int> iiii;
typedef tree<iii, null_type, greater<iii>, rb_tree_tag, tree_order_statistics_node_update> ordered_set;
 
int N, K, A[200005];
vector<ii> ord;
map<int, ii> tmp2;
 
main() {
	ios::sync_with_stdio(0);
	cin.tie(0);
	cin >> N >> K;
	for (int i = 1; i <= N + K; i++) cin >> A[i];
	for (int i = 0; i <= K; i++)
		for (int j = 0; i + j <= K; j++)
			if (i + 1 < N + K - j && tmp2.find(A[i + 1] + A[N + K - j]) == tmp2.end())
				tmp2[A[i + 1] + A[N + K - j]] = mp(i + 1, N + K - j);
	for (auto [l, r] : tmp2)
		ord.pb(r);
	shuffle(ord.begin(), ord.end(), rng);
	for (auto [l, r] : ord) {
		int S = A[l] + A[r], cnt = 0, _r = r;
		for (int k = l; k < _r; k++) {
			while (k < _r && A[k] + A[_r] > S) _r--;
			if (A[k] + A[_r] == S) {
				cnt += 2;
				if (cnt == N) break;
			}
		}
		if (cnt == N) {
			int _r = r;
			vector<int> tmp;
			for (int k = l; k < _r; k++) {
				while (k < _r && A[k] + A[_r] > S) _r--;
				if (A[k] + A[_r] == S) {
					tmp.pb(A[k]);
					tmp.pb(A[_r]);
					if (tmp.size() == N) break;
				}
			}
			sort(tmp.begin(), tmp.end());
			for (int k : tmp) cout << k << ' ';
			cout << '\n';
			return 0;
		}
	}
}

Compilation message

tabletennis.cpp:32:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   32 | main() {
      | ^~~~
tabletennis.cpp: In function 'int main()':
tabletennis.cpp:61:21: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   61 |      if (tmp.size() == N) break;
      |          ~~~~~~~~~~~^~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct

Subtask #2
0 / 9.0

# Verdict Execution time Memory Grader output
1 Incorrect 6 ms 972 KB Output not subsequence of input
2 Halted 0 ms 0 KB -

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 42 ms 4532 KB Output is correct
2 Correct 46 ms 4404 KB Output is correct
3 Correct 42 ms 4560 KB Output is correct
4 Correct 46 ms 4468 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 716 KB Output is correct
2 Correct 2 ms 716 KB Output is correct
3 Correct 2 ms 716 KB Output is correct
4 Correct 2 ms 716 KB Output is correct
5 Correct 2 ms 660 KB Output is correct

Subtask #5
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 332 KB Output is correct

Subtask #6
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 2 ms 332 KB Output is correct
3 Correct 2 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 2 ms 332 KB Output is correct
6 Correct 2 ms 332 KB Output is correct

Subtask #7
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 86 ms 4552 KB Output is correct
3 Correct 80 ms 4396 KB Output is correct
4 Correct 74 ms 4340 KB Output is correct
5 Correct 70 ms 4364 KB Output is correct
6 Correct 55 ms 4416 KB Output is correct
7 Correct 81 ms 4492 KB Output is correct
8 Correct 69 ms 4348 KB Output is correct

Subtask #8
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 80 ms 6416 KB Output is correct
2 Execution timed out 3041 ms 7340 KB Time limit exceeded
3 Halted 0 ms 0 KB -