Compilare: main.cpp: In function 'int main()': main.cpp:129:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<update>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 129 | while ( i < updates.size() && updates[i].i == l ) { | ~~^~~~~~~~~~~~~~~~ main.cpp:141:72: warning: 'col' may be used uninitialized [-Wmaybe-uninitialized] 141 | cout << lin - dx << " " << col - dy << " " << lin << " " << col << "\n"; | ^~~~ main.cpp:120:14: note: 'col' was declared here 120 | int lin, col; | ^~~ main.cpp:141:58: warning: 'lin' may be used uninitialized [-Wmaybe-uninitialized] 141 | cout << lin - dx << " " << col - dy << " " << lin << " " << col << "\n"; | ^~~ main.cpp:120:9: note: 'lin' was declared here 120 | int lin, col; | ^~~