View Compilation Error

0_0_25908685_2865.cpp: In function 'int main()':
0_0_25908685_2865.cpp:9:23: error: 'n' was not declared in this scope
         scanf("%d%d",&n,&m);
                       ^
0_0_25908685_2865.cpp:9:26: error: 'm' was not declared in this scope
         scanf("%d%d",&n,&m);
                          ^
0_0_25908685_2865.cpp:21:30: error: expected primary-expression before '=' token
         else if(n%2==1&&m%2===0)
                              ^
0_0_25908685_2865.cpp:38:30: error: expected primary-expression before '=' token
         else if(n%2==0&&m%2===1)
                              ^