Compilare: main.cpp: In function 'void buildRmq()': main.cpp:28:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 28 | for (int i=0; i<arr.size(); ++i) | ~^~~~~~~~~~~ main.cpp:31:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 31 | for (int j=1; (1<<j) <= arr.size(); ++j){ | ~~~~~~~^~~~~~~~~~~~~ main.cpp:32:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 32 | for (int i=0; i<arr.size()-(1<<j)+1; ++i){ | ~^~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void BuildPower2()': main.cpp:43:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 43 | for (int i=2; i<arr.size(); ++i){ | ~^~~~~~~~~~~