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  1. // To understand what is happening in this file, please go to the end of the file.
  2.  
  3. #include "bits/stdc++.h"
  4.  
  5. #define int long long
  6. #define vi vector< int >
  7. #define fastIO() ios::sync_with_stdio(0),cin.tie(0),cout.tie(0);
  8. #define all(x) x.begin(),x.end()
  9. #define endl '\n'
  10.  
  11. using namespace std;
  12.  
  13. /*
  14.  
  15.  
  16.   ▄████  ██▓     ██▓▄▄▄█████▓ ▄████▄   ██░ ██
  17.  ██▒ ▀█▒▓██▒    ▓██▒▓  ██▒ ▓▒▒██▀ ▀█  ▓██░ ██▒
  18. ▒██░▄▄▄░▒██░    ▒██▒▒ ▓██░ ▒░▒▓█    ▄ ▒██▀▀██░
  19. ░▓█  ██▓▒██░    ░██░░ ▓██▓ ░ ▒▓▓▄ ▄██▒░▓█ ░██
  20. ░▒▓███▀▒░██████▒░██░  ▒██▒ ░ ▒ ▓███▀ ░░▓█▒░██▓
  21.  ░▒   ▒ ░ ▒░▓  ░░▓    ▒ ░░   ░ ░▒ ▒  ░ ▒ ░░▒░▒
  22.   ░   ░ ░ ░ ▒  ░ ▒ ░    ░      ░  ▒    ▒ ░▒░ ░
  23. ░ ░   ░   ░ ░    ▒ ░  ░      ░         ░  ░░ ░
  24.       ░     ░  ░ ░           ░ ░       ░  ░  ░
  25.  
  26. */
  27.  
  28. template<typename typC> istream &operator>>(istream &cin,vector<typC> &a) { for (auto &x:a) cin>>x; return cin; }
  29. template<typename typC> ostream &operator<<(ostream &cout,const vector<typC> &a) { int n=a.size(); if (!n) return cout; cout<<a[0]; for (int i=1; i<n; i++) cout<<' '<<a[i]; return cout; }
  30.  
  31.  
  32.  
  33. void itIsADream(){
  34.     string s; cin >> s;
  35.     int n = s.size();
  36.  
  37.     vi pos;
  38.     for (int i = 0; i < n; i++) {
  39.         if (s[i] == '@') {
  40.             pos.push_back(i);
  41.         }
  42.     }
  43.  
  44.     int m = pos.size();
  45.     if (pos.empty() || pos[0] == 0 || pos.back() == n - 1) {
  46.         cout << "No solution" << endl;
  47.         return;
  48.     }
  49.  
  50.     for (int i = 0; i < m - 1; i++) {
  51.         if (pos[i + 1] - pos[i] < 3) {
  52.             cout << "No solution" << endl;
  53.             return;
  54.         }
  55.     }
  56.  
  57.     string ans = "";
  58.     int cur = 0;
  59.  
  60.     for (int i = 0; i < m; i++) {
  61.         int end;
  62.  
  63.         if (i == m - 1) {
  64.             end = n - 1;
  65.         } else {
  66.             end = pos[i] + 1;
  67.         }
  68.  
  69.         ans += s.substr(cur, end - cur + 1);
  70.  
  71.         if (i < (int)m - 1) {
  72.             ans += ",";
  73.         }
  74.  
  75.         cur = end + 1;
  76.     }
  77.  
  78.     cout << ans << endl;
  79. }
  80.  
  81. int32_t main()
  82. {
  83.     fastIO();
  84.     // freopen("input.txt", "r", stdin);
  85.     // freopen("output.txt", "w", stdout);
  86.     int t = 1;
  87.     // cin >> t;
  88.     while (t--)
  89.     {
  90.         itIsADream();
  91.     }
  92.     return 0;
  93. }
  94.  
  95. // to understand what is happening in this file, please go to the starting of the file.
Success #stdin #stdout 0.01s 5320KB
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stdin
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Standard input is empty
stdout
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No solution
https://ideone.com/5HCVJJ
language:
C++14 (gcc 8.3)
created:
9 hours ago
visibility:
public

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