View Compilation Error

0_0_14528768_1454.cpp: In function 'int main()':
0_0_14528768_1454.cpp:56:9: error: expected ';' before 'long'
         long long ans1 = (k-1)*x0+b;
         ^
0_0_14528768_1454.cpp:57:12: error: 'ans1' was not declared in this scope
         if(ans1==0&&x0==0){
            ^
0_0_14528768_1454.cpp:65:9: error: 'ans1' was not declared in this scope
         ans1 = fabs(ans1);
         ^