View Compilation Error

0_0_34674233_23145.cpp: In function 'int solve(int, int)':
0_0_34674233_23145.cpp:30:13: error: expected unqualified-id before '=' token
        int  = x, R = y, ans = -1;
             ^
0_0_34674233_23145.cpp:31:13: error: 'L' was not declared in this scope
      while (L <= R) {
             ^
0_0_34674233_23145.cpp:31:18: error: 'R' was not declared in this scope
      while (L <= R) {
                  ^
0_0_34674233_23145.cpp:36:15: error: 'ans' was not declared in this scope
               ans = M;
               ^
0_0_34674233_23145.cpp:40:9: error: 'ans' was not declared in this scope
     if (ans == -1) return y - x + 1;
         ^
0_0_34674233_23145.cpp:41:17: error: 'ans' was not declared in this scope
      return max(ans - x, RMQ(ans, y));
                 ^