func_code_string: #include <bits/stdc++.h>   using namespace std;   int x, s, t;   int main(void) {     cin >> t >> s >> x;     int a = (x - t) / s;     if (t == x) {       cout <<  YES  << endl;     } else if (a <= 0) {       cout <<  NO  << endl;     } else if (t + a * s == x || t + a * s + 1 == x) {       cout <<  YES  << endl;     } else {       cout <<  NO  << endl;     }     return 0;   }   