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Submission #598824

# Submission time Handle Problem Language Result Execution time Memory
598824 2022-07-19T06:11:38 Z shrimb Cards (LMIO19_korteles) C++17
0 / 100
 402 ms 2456 KB 
#include"bits/stdc++.h"
using namespace std;

#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;

template<class x>
using ordered_set = tree<x, null_type,less_equal<x>, rb_tree_tag,tree_order_statistics_node_update>;

#define int long long
#define endl '\n'
#define mod 1000000007
//\
#define mod 1686876991

int Hash (int a, int b) {
	return ((a * 1000000009) % mod + b) % mod;
}

signed main () {
    cin.tie(0)->sync_with_stdio(0);
	int n;
	cin >> n;
	int ans = 0;
	unordered_map<int,int> mp[1<<4];
	for (int i = 0 ; i < n ; i++) {
		char a, b, c, d;
		cin >> a >> b >> c >> d;
		int H[4] = {Hash(a, b), Hash(b, d), Hash(c, d), Hash(a, c)};
		// U R D L
		vector<int> inc;

		int enc, ienc;
		int cnt = 0;
		int inv = 0;
		#define check(j,i,k) if (j & (1 << i)) { cnt++; enc = Hash(enc, H[i]); inv |= (1 << k);}
		for (int j = 1 ; j < (1 << 4) ; j++) {
			enc = ienc = 0;
			cnt = 0;
			inv = 0;
			check(j, 0, 2);
			check(j, 1, 3);
			check(j, 2, 0);
			check(j, 3, 1);
			for (int k = 0 ; k < 4 ; k++) {
				if (inv & (1 << k)) {
					ienc = Hash(ienc, H[(k + 2) % 4]);
				}
			}
			if (cnt & 1) ans += mp[inv][ienc];
			else ans -= mp[inv][ienc];
			// cerr << enc << endl;
			inc.push_back(enc);
		}
		for (int j = 1 ; j < (1 << 4) ; j++) mp[j][inc[j - 1]]++;
	}
	cout << ans << endl;
}

Compilation message

korteles.cpp:14:1: warning: multi-line comment [-Wcomment]
   14 | //\
      | ^

Subtask #1
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Incorrect 0 ms 340 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Incorrect 0 ms 340 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 402 ms 2456 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Incorrect 51 ms 496 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #5
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Incorrect 0 ms 340 KB Output isn't correct
4 Halted 0 ms 0 KB -