Submission #198861

#	Time	Username	Problem	Language	Result	Execution time	Memory
198861		ZwariowanyMarcin	Parametriziran (COCI19_parametriziran)	C++14	110 / 110	184 ms	2040 KiB

Main

#include <bits/stdc++.h>
#define fi first
#define se second
#define mp make_pair
#define ss(x) (int) x.size()
#define pb push_back
#define LL long long
#define ld long double
#define cat(x) cerr << #x << " = " << x << endl
#define FOR(i, j, n) for(int i = j; i <= n; ++i)
#define boost cin.tie(0), ios_base::sync_with_stdio(0);


using namespace std;		

const int nax = 50005;

int n, m;
char s[nax][10];

vector <int> v[64];

LL ans;

unordered_map <int, int> x;

int daj(int nr, int mask) {
	int y = 0;
	for (int i = 0; i < m; ++i) {
		y *= 26;
		if ((mask >> i) & 1)
			y += (s[nr][i] - 'a');
	}
	return y;
}

int main() {		
	scanf ("%d%d", &n, &m);
	for (int i = 0; i < n; ++i) {
		scanf ("%s", s[i]);
		int mask = 0;
		for (int j = 0; j < m; ++j)
			if (s[i][j] != '?')
				mask += 1 << j; 
		v[mask].pb(i);
	}
	
	for (int m1 = 0; m1 < (1 << m); ++m1)
		for (int m2 = m1; m2 < (1 << m); ++m2) {
			x.clear();
			LL res = 0;
			int p = (m1 & m2);
			for (auto it : v[m1])
				x[daj(it, p)]++;
			for (auto it : v[m2]) 
				res += x[daj(it, p)];
			if (m1 != m2) ans += res;
			else ans += (res - ss(v[m1])) / 2;
		}
	printf ("%lld", ans);
			
		
	
	return 0;
}

Compilation message (stderr)

parametriziran.cpp: In function 'int main()':
parametriziran.cpp:38:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf ("%d%d", &n, &m);
  ~~~~~~^~~~~~~~~~~~~~~~
parametriziran.cpp:40:9: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf ("%s", s[i]);
   ~~~~~~^~~~~~~~~~~~

• Subtask 1: 11 / 11
• Subtask 2: 11 / 11
• Subtask 3: 11 / 11
• Subtask 4: 11 / 11
• Subtask 5: 11 / 11
• Subtask 6: 11 / 11
• Subtask 7: 11 / 11
• Subtask 8: 11 / 11
• Subtask 9: 11 / 11
• Subtask 10: 11 / 11