/in/foo.cc: In function 'int main()':
/in/foo.cc:15:20: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
 #define F(x, y, z) for(int x=y; x<=z; x++)
                    ^
/in/foo.cc:34:2: note: in expansion of macro 'F'
  F(i, 0, b) ans=max(ans, dp[l][i]); cout << ans << endl;
  ^
/in/foo.cc:34:37: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
  F(i, 0, b) ans=max(ans, dp[l][i]); cout << ans << endl;
                                     ^~~~