Compilare: main.cpp: In function 'void fa_rmq()': main.cpp:72:29: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 72 | for(int j = 1; (1 << j) < ctc.size(); j++){ | ~~~~~~~~~^~~~~~~~~~~~ main.cpp:73:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 73 | for(int i = 0; i < ctc.size(); i++){ | ~~^~~~~~~~~~~~ main.cpp: In function 'void precalc_rmq2()': main.cpp:108:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 108 | for(int i = 0; i < ctc.size(); i++){ | ~~^~~~~~~~~~~~ main.cpp:112:29: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 112 | for(int j = 1; (1 << j) < ctc.size(); j++){ | ~~~~~~~~~^~~~~~~~~~~~ main.cpp:113:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 113 | for(int i = 0; i < ctc.size(); i++){ | ~~^~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:189:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 189 | for(int i = 0; i < ctc.size(); i++){ | ~~^~~~~~~~~~~~