View Compilation Error

0_0_34667546_26044.cpp: In function 'int main()':
0_0_34667546_26044.cpp:8:2: error: 'y' was not declared in this scope
 {y
  ^
0_0_34667546_26044.cpp:11:22: error: 'n' was not declared in this scope
  while(scanf("%d%d",&n,&m)!=EOF)
                      ^
0_0_34667546_26044.cpp:11:25: error: 'm' was not declared in this scope
  while(scanf("%d%d",&n,&m)!=EOF)
                         ^
0_0_34667546_26044.cpp:13:3: error: 'a' was not declared in this scope
   a=max(n,m);
   ^
0_0_34667546_26044.cpp:14:3: error: 'b' was not declared in this scope
   b=min(n,m);
   ^
0_0_34667546_26044.cpp:16:3: error: 't' was not declared in this scope
   t=(int)(r*c);
   ^