I am always stuck at typecasting issues but now this case i did right but still getting errors,anyone help me with this clearly whats wrong here and explain me concept clearly so that i get clarfied

      int nthTermOfGP(int N, int A, int R) {
`    `if(N==1)
      {
      return A;
      }

`    `if(N<=0)
      {
       return 1;
      }
   
       long long mod = 1000000007;
    
       long long  ans = nthTermOfGP( N-1,  A, R) % mod;
       long long x=(R*ans)%mod;
       return  (int) x;
 
        }

To find nth term of geometric progression ,i did simply that nth term is obtained by multipliying R

to n-1th term also in question they mentioned to return modulus of 10^9 +7 so i did but getting for some case getting theses run time errors.I am really unable to understand also i watcjed answer the casting is similar but whys mine worng