foo.cc: In function 'int main()':
foo.cc:7:3: warning: this 'while' clause does not guard... [-Wmisleading-indentation]
    7 |   while(i<=n&&a[i+1][j]==0&&cnt<n)a[i][j]=++cnt,i++;i=n;
      |   ^~~~~
foo.cc:7:53: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'while'
    7 |   while(i<=n&&a[i+1][j]==0&&cnt<n)a[i][j]=++cnt,i++;i=n;
      |                                                     ^
foo.cc:8:3: warning: this 'while' clause does not guard... [-Wmisleading-indentation]
    8 |   while(j>=1&&a[i][j-1]==0&&cnt<n)a[i][j]=++cnt,j--;i=1;
      |   ^~~~~
foo.cc:8:53: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'while'
    8 |   while(j>=1&&a[i][j-1]==0&&cnt<n)a[i][j]=++cnt,j--;i=1;
      |                                                     ^
foo.cc:9:3: warning: this 'while' clause does not guard... [-Wmisleading-indentation]
    9 |   while(i>=1&&a[i-1][j]==0&&cnt<n)a[i][j]=++cnt,i--;i=1;
      |   ^~~~~
foo.cc:9:53: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'while'
    9 |   while(i>=1&&a[i-1][j]==0&&cnt<n)a[i][j]=++cnt,i--;i=1;
      |                                                     ^
foo.cc:10:3: warning: this 'while' clause does not guard... [-Wmisleading-indentation]
   10 |   while(j<=n&&a[i][j+1]==0&&cnt<n)a[i][j]=++cnt,j++;j=n;
      |   ^~~~~
foo.cc:10:53: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'while'
   10 |   while(j<=n&&a[i][j+1]==0&&cnt<n)a[i][j]=++cnt,j++;j=n;
      |                                                     ^

Found 4 testcases.