View Compilation Error

0_0_17143433_31399.cpp: In function 'int main()':
0_0_17143433_31399.cpp:75:9: error: expected ';' before 'if'
         if(ans!=-1)
         ^
0_0_17143433_31399.cpp:77:9: error: 'else' without a previous 'if'
         else
         ^