View Compilation Error

0_0_36519165_24722.cpp: In function 'int main()':
0_0_36519165_24722.cpp:72:36: error: 'sum' was not declared in this scope
         printf("Case #%d: %d\n", ++sum, min(ans1, ans2));
                                    ^
0_0_36519165_24722.cpp:72:45: error: 'ans1' was not declared in this scope
         printf("Case #%d: %d\n", ++sum, min(ans1, ans2));
                                             ^
0_0_36519165_24722.cpp:72:51: error: 'ans2' was not declared in this scope
         printf("Case #%d: %d\n", ++sum, min(ans1, ans2));
                                                   ^