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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. #define int              long long int
  4. #define double           long double
  5. inline int power(int a, int b) {
  6.     int x = 1;
  7.     while (b) {
  8.         if (b & 1) x *= a;
  9.         a *= a;
  10.         b >>= 1;
  11.     }
  12.     return x;
  13. }
  14.  
  15.  
  16. const int M = 1000000007;
  17. const int N = 3e5+9;
  18. const int INF = 2e9+1;
  19. const int LINF = 2000000000000000001;
  20.  
  21. //_ ***************************** START Below *******************************
  22.  
  23.  
  24.  
  25. vector<int> a;
  26. void consistency(string s) {
  27.  
  28. 	int n = s.size();
  29. 	int L = 0;
  30. 	int LC = 0;
  31. 	int LCT = 0;
  32. 	for(int i=0; i<n; i++){
  33. 		if(s[i] == 'L') L++;
  34. 		else if(s[i] == 'C') LC += L;
  35. 		else if(s[i] == 'T') LCT += LC;
  36. 	}
  37.  
  38. 	int T = 0;
  39. 	int CT = 0;
  40. 	for(int i=n-1; i>=0; i--){
  41. 		if(s[i] == 'T') T++;
  42. 		else if(s[i] == 'C') CT++;
  43.  
  44. 	}
  45.  
  46. 	int LCTT = LCT + LC;
  47. 	int LLCT = LCT + CT;
  48. 	int ans = max(LCTT, LLCT);
  49.  
  50. 	int ct = 0;
  51. 	int l = 0;
  52. 	int t = T;
  53. 	for(int i=0; i<n-1; i++){
  54. 		if(s[i] == 'L') l++;
  55. 		else if(s[i] == 'T') t--;
  56.  
  57. 		ct = max(ct, l * t);
  58. 	}
  59.  
  60. 	int LCCT = LCT + ct;
  61.  
  62. 	ans = max(ans, LCCT);
  63.  
  64. 	cout << ans << endl;
  65.  
  66. }
  67.  
  68. void solve() {
  69.  
  70. 	string s;
  71. 	cin >> s;
  72.     consistency(s) ;
  73.  
  74. }
  75.  
  76.  
  77.  
  78.  
  79.  
  80. int32_t main() {
  81.     ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
  82.  
  83.     int t = 1;
  84.     while (t--) {
  85.         solve();
  86.     }
  87.  
  88.     return 0;
  89. }
Success #stdin #stdout 0s 5304KB
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https://ideone.com/bTUlNZ
language:
C++14 (gcc 8.3)
created:
1 day ago
visibility:
public

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