Submission #96669

#	Time	Username	Problem	Language	Result	Execution time	Memory
96669		keko37	Parametriziran (COCI19_parametriziran)	C++14	110 / 110	460 ms	3184 KiB

Main

#include<bits/stdc++.h>

using namespace std;

typedef long long llint;

const int MAXN = 50005;

llint n, m, sol;
string s[MAXN];
vector <int> v[70];
unordered_map <llint, int> mp;

void spoji (int m1, int m2) {
    mp.clear();
    for (int i=0; i<v[m1].size(); i++) {
        llint h = 0;
        for (int j=0; j<m; j++) {
            if ((m1 & (1 << j)) && (m2 & (1 << j))) {
                h = h * 27 + s[v[m1] [i]] [j] - 'a';
            }
        }
        mp[h]++;
    }
    for (int i=0; i<v[m2].size(); i++) {
        llint h = 0;
        for (int j=0; j<m; j++) {
            if ((m1 & (1 << j)) && (m2 & (1 << j))) {
                h = h * 27 + s[v[m2] [i]] [j] - 'a';
            }
        }
        sol += mp[h];
    }
}

int main () {
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cin >> n >> m;
    for (int i=1; i<=n; i++) {
        cin >> s[i];
        int mask = 0;
        for (int j=0; j<m; j++) {
            if (s[i] [j] != '?') mask += (1 << j);
        }
        v[mask].push_back(i);
    }
    for (int m1=0; m1<(1 << m); m1++) {
        for (int m2=0; m2<(1 << m); m2++) {
            spoji(m1, m2);
        }
    }
    cout << (sol - n)/2;
    return 0;
}

Compilation message (stderr)

parametriziran.cpp: In function 'void spoji(int, int)':
parametriziran.cpp:16:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i=0; i<v[m1].size(); i++) {
                   ~^~~~~~~~~~~~~
parametriziran.cpp:25:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i=0; i<v[m2].size(); 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