Compilare: user.cpp:62:0: warning: "x" redefined [enabled by default] # define x best.first ^ user.cpp:45:0: note: this is the location of the previous definition # define x p[i].first ^ user.cpp:63:0: warning: "y" redefined [enabled by default] # define y best.second ^ user.cpp:46:0: note: this is the location of the previous definition # define y p[i].second ^ user.cpp: In function ‘int main()’: user.cpp:44:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( i = 0; i < p.size(); i ++ ) { ^ user.cpp:29:28: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%d", &n ); ^ user.cpp:33:42: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%d", &h[i][j] ); ^