Compilare: main.cpp: In function 'void init_rmq()': main.cpp:54:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 54 | for(int i = 0; i < euler.size(); i++) { | ~~^~~~~~~~~~~~~~ main.cpp:61:35: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 61 | for(int i = 0; i + (1 << level) <= euler.size(); i++) { | ~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~