View Compilation Error

0_0_13103826_30527.cpp: In function 'int main()':
0_0_13103826_30527.cpp:28:9: error: expected ';' before 'if'
         if(!next[len])
         ^
0_0_13103826_30527.cpp:37:36: error: expected ';' before ')' token
          printf("%d\n",len-len%ans));
                                    ^