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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. #define fast_io ios::sync_with_stdio(false); cin.tie(NULL);
  5. #define int long long
  6.  
  7. void solve() {
  8.     string s;
  9.     cin >> s;
  10.     int n = s.size();
  11.  
  12.     bool seenGreater = false;
  13.     for (char c : s) {
  14.         if (c == '>') seenGreater = true;
  15.         if (c == '<' && seenGreater) {
  16.             cout << -1 << "\n";
  17.             return;
  18.         }
  19.     }
  20.  
  21.     for (int i = 0; i + 1 < n; i++) {
  22.         if (s[i] == '*' && s[i+1] == '*') {
  23.             cout << -1 << "\n";
  24.             return;
  25.         }
  26.     }
  27.  
  28.     int first_gt = -1;
  29.     for (int i = 0; i < n; i++) {
  30.         if (s[i] == '>') {
  31.             first_gt = i;
  32.             break;
  33.         }
  34.     }
  35.  
  36.     int last_lt = -1;
  37.     for (int i = 0; i < n; i++) {
  38.         if (s[i] == '<') last_lt = i;
  39.     }
  40.  
  41.     int L = (first_gt == -1 ? 0 : first_gt);
  42.     int R = (last_lt == -1 ? 0 : (n - 1 - last_lt));
  43.  
  44.     cout << max(L, R) << "\n";
  45. }
  46.  
  47. int32_t main() {
  48.     fast_io
  49.     int t;
  50.     cin >> t;
  51.     while (t--) solve();
  52.     return 0;
  53. }
  54.  
Success #stdin #stdout 0.01s 5268KB
comments (?)
stdin
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4
*****
<<<>
>*<
*
stdout
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-1
3
-1
0
https://ideone.com/4dRlhG
language:
C++ (gcc 8.3)
created:
4 hours ago
visibility:
public

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