func_code_string: #include <bits/stdc++.h>   using namespace std;   const int maxn = 100005;   const int INF = 1 << 30;   const double eps = 1e-6;   const int mod = 1000000007;   string s;   void getVal(int& a, int& b, char x) {     a = b = -1;     for (int i = 0; i < s.size(); i++) {       if (s[i] != x) continue;       if (a == -1) a = i;       b = i;     }   }   int main() {     cin >> s;     int n = s.size();     int la, ra, lb, rb, lc, rc;     bool ok = true;     getVal(la, ra,  a );     if (la == -1 || ra == -1) ok = false;     getVal(lb, rb,  b );     if (lb == -1 || rb == -1) ok = false;     getVal(lc, rc,  c );     if (lc == -1 || rc == -1) ok = false;     if (ra + 1 != lb || rb + 1 != lc)       ok = false;     else if (rc - lc != rb - lb && rc - lc != ra - la)       ok = false;     puts(ok ?  YES  :  NO );     return 0;   }   