Compilare: main.cpp: In function 'int main()': main.cpp:16:26: warning: comparison of integer expressions of different signedness: 'size_t' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 16 | for (size_t i = 1; i <= n; i++) | ~~^~~~ main.cpp:20:26: warning: comparison of integer expressions of different signedness: 'size_t' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 20 | for (size_t i = 1; i <= m; i++) | ~~^~~~ main.cpp:23:55: warning: comparison of integer expressions of different signedness: 'const long long int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 23 | while (!ocupat.empty() and ocupat.top().first == -i) | ~~~~~~~~~~~~~~~~~~~^~~~~