View Compilation Error

0_0_13959100_12464.cpp: In function 'int main()':
0_0_13959100_12464.cpp:6:13: error: 'i' was not declared in this scope
         for(i=1;i<=m;i++)
             ^
0_0_13959100_12464.cpp:8:9: error: 's1' was not declared in this scope
         s1^=a[i];
         ^
0_0_13959100_12464.cpp:8:15: error: 'i' was not declared in this scope
         s1^=a[i];
               ^
0_0_13959100_12464.cpp:10:10: error: 's1' was not declared in this scope
       if(s1) printf("Grass win\n");
          ^