Submission #713673

#	Time	Username	Problem	Language	Result	Execution time	Memory
713673		tamyte	Cards (LMIO19_korteles)	C++14	36 / 100	1063 ms	16664 KiB

korteles

#include <bits/stdc++.h>


using namespace std;
#define sz(x) (int)(x).size()
void setIO(string name = "")
{
    cin.tie(0)->sync_with_stdio(0); // see /general/fast-io
    if (sz(name))
    {
        freopen((name + ".in").c_str(), "r", stdin); // see /general/input-output
        freopen((name + ".out").c_str(), "w", stdout);
    }
}

/*----------------------------------*/
vector<int> match[4][26][26]; // 0 - up, 1 - down, 2 - left, 3 - right
struct cards
{
    char a, b, c, d;
};

int main()
{
    setIO("");
    int n;
    cin >> n;
    // cout << 'Z' - 65;
    // return 0;
    vector<cards> arr(n);
    for (int i = 0; i < n; ++i) {
        cin >> arr[i].a >> arr[i].b >> arr[i].c >> arr[i].d;
        match[0][arr[i].a - 'A'][arr[i].b - 'A'].push_back(i);
        match[1][arr[i].c - 'A'][arr[i].d - 'A'].push_back(i);
        match[2][arr[i].a - 'A'][arr[i].c - 'A'].push_back(i);
        match[3][arr[i].b - 'A'][arr[i].d - 'A'].push_back(i);
    }
    reverse(arr.begin(), arr.end());
    int ans = 0;
    for (int i = 0; i < n; ++i) {
        set<int> st;
        st.insert(n - i - 1);
        match[0][arr[i].a - 'A'][arr[i].b - 'A'].pop_back();
        match[1][arr[i].c - 'A'][arr[i].d - 'A'].pop_back();
        match[2][arr[i].a - 'A'][arr[i].c - 'A'].pop_back();
        match[3][arr[i].b - 'A'][arr[i].d - 'A'].pop_back();
        for (auto u : match[1][arr[i].a - 'A'][arr[i].b - 'A']) {
            // cout << u << " ";
            st.insert(u);
        }
        for (auto u : match[0][arr[i].c - 'A'][arr[i].d - 'A']) {
            // cout << u << " ";

            st.insert(u);
        }
        for (auto u : match[3][arr[i].a - 'A'][arr[i].c - 'A']) {
            // cout << u << " ";

            st.insert(u);
        }
        for (auto u : match[2][arr[i].b - 'A'][arr[i].d - 'A']) {
            // cout << u << " ";
            
            st.insert(u);
        }
        ans += st.size() - 1;
    }
    cout << ans;
}

Compilation message (stderr)

korteles.cpp: In function 'void setIO(std::string)':
korteles.cpp:11:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   11 |         freopen((name + ".in").c_str(), "r", stdin); // see /general/input-output
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
korteles.cpp:12:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 |         freopen((name + ".out").c_str(), "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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