Submission #501769

#	Time	Username	Problem	Language	Result	Execution time	Memory
501769		fabijan_cikac	Cards (LMIO19_korteles)	C++17	16 / 100	1089 ms	35924 KiB

korteles

#include <bits/stdc++.h>

using namespace std;

typedef long long int ll;

int n;
map<string, int> m;
ll sol = 0;
vector<string> v;

int dio(string a, string b){
    for (int i = 0; i < a.size(); ++i){
        if (a[i] != '*' && a[i] != b[i])
            return 0;
    }
    return 1;
}

void solve(string a){
    for (int i = 1; i < 16; ++i){
        string s = "****";
        int cnt = 0;
        for (int j = 0; j < 4; ++j){
            if (i & (1 << j))
                ++cnt;
        }
        if (i & 1){
            if ((s[3] != '*' && s[3] != a[0]) || (s[2] != '*' && s[2] != a[1]))
                continue;
            s[3] = a[0]; s[2] = a[1];
        }
        if (i & 2){
            if ((s[0] != '*' && s[0] != a[1]) || (s[3] != '*' && s[3] != a[2]))
                continue;
            s[0] = a[1]; s[3] = a[2];
        }
        if (i & 4){
            if ((s[0] != '*' && s[0] != a[3]) || (s[1] != '*' && s[1] != a[2]))
                continue;
            s[0] = a[3]; s[1] = a[2];
        }
        if (i & 8){
            if ((s[1] != '*' && s[1] != a[0]) || (s[2] != '*' && s[2] != a[3]))
                continue;
            s[1] = a[0]; s[2] = a[3];
        }
        if (cnt & 1)
            sol += (m[s] - dio(a, s));
        else sol -= (m[s] - dio(a, s));
    }
}

int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);

    cin >> n; v.resize(n);
    for (int i = 0; i < n; ++i){
        string b; cin >> v[i] >> b;
        v[i].push_back(b[1]); v[i].push_back(b[0]);
        for (int j = 0; j < 16; ++j){
            string s;
            for (int k = 0; k < 4; ++k){
                if (j & (1 << k))
                    s.push_back(v[i][k]);
                else s.push_back('*');
            }
            ++m[s];
        }
    }
    for (int i = 0; i < n; ++i)
        solve(v[i]);
    cout << sol / 2;

    return 0;
}

Compilation message (stderr)

korteles.cpp: In function 'int dio(std::string, std::string)':
korteles.cpp:13:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   13 |     for (int i = 0; i < a.size(); ++i){
      |                     ~~^~~~~~~~~~

• Subtask 1: 16 / 16
• Subtask 2: 0 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 19
• Subtask 5: 0 / 25