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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.     if (n == 1) {
  13.         cout << 1 << "\n";
  14.         return;
  15.     }
  16.  
  17.     bool seenGreater = false;
  18.     for (char c : s) {
  19.         if (c == '>') seenGreater = true;
  20.         if (c == '<' && seenGreater) {
  21.             cout << -1 << "\n";
  22.             return;
  23.         }
  24.     }
  25.  
  26.     for (int i = 0; i + 1 < n; i++) {
  27.         if (s[i] == '*' && s[i+1] == '*') {
  28.             cout << -1 << "\n";
  29.             return;
  30.         }
  31.     }
  32.  
  33.     int first_gt = -1;
  34.     for (int i = 0; i < n; i++) {
  35.         if (s[i] == '>') {
  36.             first_gt = i;
  37.             break;
  38.         }
  39.     }
  40.  
  41.     int last_lt = -1;
  42.     for (int i = 0; i < n; i++) {
  43.         if (s[i] == '<') last_lt = i;
  44.     }
  45.  
  46.     if (first_gt == -1) {
  47.         cout << n << "\n";
  48.         return;
  49.     }
  50.  
  51.     if (last_lt == -1) {
  52.         cout << n << "\n";
  53.         return;
  54.     }
  55.  
  56.     int L = first_gt;
  57.     int R = n - 1 - last_lt;
  58.  
  59.     cout << max(L, R) << "\n";
  60. }
  61.  
  62. int32_t main() {
  63.     fast_io;
  64.     int t;
  65.     cin >> t;
  66.     while (t--) solve();
  67.     return 0;
  68. }
  69.  
Success #stdin #stdout 0.01s 5324KB
comments (?)
stdin
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4
*****
<<<>
>*<
*
stdout
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-1
3
-1
1
https://ideone.com/vRwts4
language:
C++ (gcc 8.3)
created:
7 hours ago
visibility:
public

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