View Compilation Error

1_734_511_27152.cpp: In function 'int main()':
1_734_511_27152.cpp:17:9: error: 'last' was not declared in this scope
         last=INF;
         ^
1_734_511_27152.cpp:24:20: error: 'rest' was not declared in this scope
                 if(rest==0){
                    ^