Submission #254118

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
254118	2020-07-29 11:21:30	Nightlight	Cards (LMIO19_korteles)	C++14	100 / 100	76 ms	4096 KiB

korteles

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#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)]++;
 
 
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• Subtask 1: 16 / 16
• Subtask 2: 20 / 20
• Subtask 3: 20 / 20
• Subtask 4: 19 / 19
• Subtask 5: 25 / 25