View Compilation Error

0_0_17425333_16897.cpp: In function 'int main()':
0_0_17425333_16897.cpp:24:22: error: 'c2' was not declared in this scope
             if(x==1) c2+=y-1;  
                      ^
0_0_17425333_16897.cpp:25:18: error: 'c1' was not declared in this scope
             else c1+=x-1;  
                  ^
0_0_17425333_16897.cpp:28:12: error: 'c1' was not declared in this scope
         if(c1>c2) puts("Alice");  
            ^
0_0_17425333_16897.cpp:28:15: error: 'c2' was not declared in this scope
         if(c1>c2) puts("Alice");  
               ^