oj.uz

Submission #254118

# Submission time Handle Problem Language Result Execution time Memory
254118 2020-07-29T11:21:30 Z Nightlight Cards (LMIO19_korteles) C++14
100 / 100
 76 ms 4096 KB 
#include <bits/stdc++.h>
using namespace std;

int N;
int L[680], R[680], U[680], D[680];
bitset<680> vis1, vis2;
long long cnt[500000];
char aa, bb, cc, dd;
long long ans;
/*
AB
CD
*/

inline int num(char A, char B, char C, char D) {return 17576 * (A - 'A') + 676 * (B - 'A') + 26 * (C - 'A') + D - 'A';}
inline int num(char C, char D) {return 26 * (C - 'A') + D - 'A';}
inline int num(int A, int B, int C, int D) {return 17576 * (A) + 676 * (B) + 26 * (C) + D;}
inline int num(int C, int D) {return 26 * (C) + D;}

inline void match(int a, int b) {if(a > b) ans -= cnt[a] * cnt[b];}
inline void match2(int a, int b) {if(a != b) ans -= cnt[a] * cnt[b];}

int main() {
  ios_base::sync_with_stdio(0);
  cin >> N;
  for(int i = 1; i <= N; i++) {
    cin >> aa >> bb >> cc >> dd;
    if(aa == bb && cc == dd) ans--;
    if(aa == cc && bb == dd) ans--;
    cnt[num(aa, bb, cc, dd)]++;
    L[num(aa, cc)]++;
    U[num(aa, bb)]++;
    R[num(bb, dd)]++;
    D[num(cc, dd)]++;
  }
//  cout << ans << "\n";
  for(int i = 0; i < 26; i++) {
    for(int j = 0; j < 26; j++) {
      ans += L[num(i, j)] * R[num(i, j)];
      ans += U[num(i, j)] * D[num(i, j)];
      
      for(int k = 0; k < 26; k++) {
        for(int l = 0; l < 26; l++) {
          match(num(i, j, k, l), num(k, l, i, j));
          match(num(i, j, k, l), num(j, i, l, k));

          match2(num(i, j, k, i), num(j, l, i, j));
          match2(num(k, i, i, j), num(i, j, j, l));
        }
      }
      
      if(i < j) ans += 3 * cnt[num(i, j, j, i)] * cnt[num(j, i, i, j)];
    }
  }
  cout << ans << "\n";
  cin >> N;
}

Subtask #1
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 512 KB Output is correct
4 Correct 3 ms 512 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 384 KB Output is correct
2 Correct 3 ms 2048 KB Output is correct
3 Correct 5 ms 768 KB Output is correct
4 Correct 4 ms 3712 KB Output is correct
5 Correct 6 ms 2048 KB Output is correct
6 Correct 4 ms 2816 KB Output is correct
7 Correct 3 ms 384 KB Output is correct
8 Correct 3 ms 384 KB Output is correct
9 Correct 2 ms 384 KB Output is correct
10 Correct 2 ms 512 KB Output is correct
11 Correct 3 ms 512 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 63 ms 4096 KB Output is correct
2 Correct 76 ms 3968 KB Output is correct
3 Correct 57 ms 4084 KB Output is correct
4 Correct 55 ms 4096 KB Output is correct
5 Correct 48 ms 3968 KB Output is correct

Subtask #4
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 384 KB Output is correct
2 Correct 11 ms 4096 KB Output is correct
3 Correct 34 ms 3968 KB Output is correct
4 Correct 19 ms 3968 KB Output is correct
5 Correct 31 ms 3968 KB Output is correct

Subtask #5
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 384 KB Output is correct
2 Correct 3 ms 2048 KB Output is correct
3 Correct 5 ms 768 KB Output is correct
4 Correct 4 ms 3712 KB Output is correct
5 Correct 6 ms 2048 KB Output is correct
6 Correct 4 ms 2816 KB Output is correct
7 Correct 3 ms 384 KB Output is correct
8 Correct 3 ms 384 KB Output is correct
9 Correct 2 ms 384 KB Output is correct
10 Correct 2 ms 512 KB Output is correct
11 Correct 3 ms 512 KB Output is correct
12 Correct 63 ms 4096 KB Output is correct
13 Correct 76 ms 3968 KB Output is correct
14 Correct 57 ms 4084 KB Output is correct
15 Correct 55 ms 4096 KB Output is correct
16 Correct 48 ms 3968 KB Output is correct
17 Correct 11 ms 4096 KB Output is correct
18 Correct 34 ms 3968 KB Output is correct
19 Correct 19 ms 3968 KB Output is correct
20 Correct 31 ms 3968 KB Output is correct
21 Correct 14 ms 3968 KB Output is correct
22 Correct 54 ms 3968 KB Output is correct
23 Correct 36 ms 4096 KB Output is correct
24 Correct 34 ms 3968 KB Output is correct