Submission #862191

#	Time	Username	Problem	Language	Result	Execution time	Memory
862191		TAhmed33	Set (COCI21_set)	C++98	40 / 110	314 ms	604 KiB

Main

#include <bits/stdc++.h>
using namespace std;
int op (string a, string b) {
	int ret = 0;
	for (int i = 0; i < (int)a.length(); i++) {
		ret *= 3;
		if (a[i] == b[i]) ret += a[i] - '0';
		else if (a[i] == '1' && b[i] == '2') {
			ret += 3;
		} else if (a[i] == '2' && b[i] == '1') {
			ret += 3;
		} else if (a[i] == '1' && b[i] == '3') {
			ret += 2;
		} else if (a[i] == '3' && b[i] == '1') {
			ret += 2;
		} else {
			ret++;
		}
	}
	return ret;
}
int freq[6563];
int hsh[2188];
string arr[2188];
int hashh (string s) {
	int cnt = 0;
	for (int i = 0; i < s.length(); i++) {
		cnt *= 3; cnt += (s[i] - '0');
	}
	return cnt;
}
int main () {
	ios::sync_with_stdio(0);
	cin.tie(0);
	int n, m;
	cin >> n >> m;
	for (int i = 0; i < n; i++) {
		cin >> arr[i];
		hsh[i] = hashh(arr[i]);
		freq[hsh[i]]++;
	}
	long long ans = 0;
	for (int i = 0; i < n; i++) {
		for (int j = 0; j < n; j++) {
			if (i == j) continue;
			ans += freq[op(arr[i], arr[j])];
			if (hsh[i] == hsh[j]) ans -= 2;
		}
	}
	ans /= 6;
	cout << ans << '\n';
}

Compilation message (stderr)

Main.cpp: In function 'int hashh(std::string)':
Main.cpp:27:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   27 |  for (int i = 0; i < s.length(); i++) {
      |                  ~~^~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 30 / 30
• Subtask 3: 0 / 70