answer.code: In function ‘int main()’:
answer.code:100:57: warning: division by zero [-Wdiv-by-zero]
  100 |                     if(cnt==2 && (n!=2 || m!=2)) cout<<1/0<<endl;
      |                                                        ~^~
answer.code:161:35: warning: division by zero [-Wdiv-by-zero]
  161 |                 if(cnt==2) cout<<1/0<<endl;
      |                                  ~^~
answer.code: At global scope:
answer.code:173:11: error: redefinition of ‘const int MAXN’
  173 | const int MAXN=1500+5;
      |           ^~~~
answer.code:6:11: note: ‘const int MAXN’ previously defined here
    6 | const int MAXN=1500+5;
      |           ^~~~
answer.code:174:11: error: redefinition of ‘const int MAXM’
  174 | const int MAXM=1500+5;
      |           ^~~~
answer.code:7:11: note: ‘const int MAXM’ previously defined here
    7 | const int MAXM=1500+5;
      |           ^~~~
answer.code:176:5: error: redefinition of ‘int n’
  176 | int n,m,k;
      |     ^
answer.code:9:5: note: ‘int n’ previously declared here
    9 | int n,m,k;
      |     ^
answer.code:176:7: error: redefinition of ‘int m’
  176 | int n,m,k;
      |       ^
answer.code:9:7: note: ‘int m’ previously declared here
    9 | int n,m,k;
      |       ^
answer.code:176:9: error: redefinition of ‘int k’
  176 | int n,m,k;
      |         ^
answer.code:9:9: note: ‘int k’ previously declared here
    9 | int n,m,k;
      |         ^
answer.code:177:6: error: redefinition of ‘bool t [1505][1505]’
  177 | bool t[MAXN][MAXM];
      |      ^
answer.code:10:6: note: ‘bool t [1505][1505]’ previously declared here
   10 | bool t[MAXN][MAXM];
      |      ^
answer.code:178:6: error: redefinition of ‘bool w’
  178 | bool w,b;
      |      ^
answer.code:11:6: note: ‘bool w’ previously declared here
   11 | bool w,b;
      |      ^
answer.code:178:8: error: redefinition of ‘bool b’
  178 | bool w,b;
      |        ^
answer.code:11:8: note: ‘bool b’ previously declared here
   11 | bool w,b;
      |        ^
answer.code:179:6: error: redefinition of ‘bool c [1505][1505]’
  179 | bool c[MAXN][MAXN];
      |      ^
answer.code:12:6: note: ‘bool c [1505][1505]’ previously declared here
   12 | bool c[MAXN][MAXN];
      |      ^
answer.code:181:6: error: redefinition of ‘void clr(int)’
  181 | void clr(int x)
      |      ^~~
answer.code:14:6: note: ‘void clr(int)’ previously defined here
   14 | void clr(int x)
      |      ^~~
answer.code:189:6: error: redefinition of ‘void print()’
  189 | void print()
      |      ^~~~~
answer.code:22:6: note: ‘void print()’ previously defined here
   22 | void print()
      |      ^~~~~
answer.code:199:6: error: redefinition of ‘void init()’
  199 | void init()
      |      ^~~~
answer.code:32:6: note: ‘void init()’ previously defined here
   32 | void init()
      |      ^~~~
answer.code:205:5: error: redefinition of ‘int main()’
  205 | int main()
      |     ^~~~
answer.code:38:5: note: ‘int main()’ previously defined here
   38 | int main()
      |     ^~~~
answer.code: In function ‘int main()’:
answer.code:267:57: warning: division by zero [-Wdiv-by-zero]
  267 |                     if(cnt==2 && (n!=2 || m!=2)) cout<<1/0<<endl;
      |                                                        ~^~
answer.code:328:35: warning: division by zero [-Wdiv-by-zero]
  328 |                 if(cnt==2) cout<<1/0<<endl;
      |                                  ~^~
answer.code: At global scope:
answer.code:340:11: error: redefinition of ‘const int MAXN’
  340 | const int MAXN=1500+5;
      |           ^~~~
answer.code:6:11: note: ‘const int MAXN’ previously defined here
    6 | const int MAXN=1500+5;
      |           ^~~~
answer.code:341:11: error: redefinition of ‘const int MAXM’
  341 | const int MAXM=1500+5;
      |           ^~~~
answer.code:7:11: note: ‘const int MAXM’ previously defined here
    7 | const int MAXM=1500+5;
      |           ^~~~
answer.code:343:5: error: redefinition of ‘int n’
  343 | int n,m,k;
      |     ^
answer.code:9:5: note: ‘int n’ previously declared here
    9 | int n,m,k;
      |     ^
answer.code:343:7: error: redefinition of ‘int m’
  343 | int n,m,k;
      |       ^
answer.code:9:7: note: ‘int m’ previously declared here
    9 | int n,m,k;
      |       ^
answer.code:343:9: error: redefinition of ‘int k’
  343 | int n,m,k;
      |         ^
answer.code:9:9: note: ‘int k’ previously declared here
    9 | int n,m,k;
      |         ^
answer.code:344:6: error: redefinition of ‘bool t [1505][1505]’
  344 | bool t[MAXN][MAXM];
      |      ^
answer.code:10:6: note: ‘bool t [1505][1505]’ previously declared here
   10 | bool t[MAXN][MAXM];
      |      ^
answer.code:345:6: error: redefinition of ‘bool w’
  345 | bool w,b;
      |      ^
answer.code:11:6: note: ‘bool w’ previously declared here
   11 | bool w,b;
      |      ^
answer.code:345:8: error: redefinition of ‘bool b’
  345 | bool w,b;
      |        ^
answer.code:11:8: note: ‘bool b’ previously declared here
   11 | bool w,b;
      |   ...