Compilare: main.cpp: In function 'int main()': main.cpp:94:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 94 | for (int it1 = 0; it1 < it.second.size(); ++it1) | ~~~~^~~~~~~~~~~~~~~~~~ main.cpp:96:41: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 96 | for (int it2 = it1 + 1; it2 < it.second.size(); ++it2) | ~~~~^~~~~~~~~~~~~~~~~~ main.cpp:49:12: warning: unused variable 'j' [-Wunused-variable] 49 | int i, j, masca, rez = 0, maxi = 0; | ^ main.cpp:130:19: warning: 'rez2' may be used uninitialized [-Wmaybe-uninitialized] 130 | if ((rez2 >> (i - 1)) & 1) | ~~~~~~^~~~~~~~~~~ main.cpp:52:15: note: 'rez2' was declared here 52 | int rez1, rez2; | ^~~~ main.cpp:120:19: warning: 'rez1' may be used uninitialized [-Wmaybe-uninitialized] 120 | if ((rez1 >> (i - 1)) & 1) | ~~~~~~^~~~~~~~~~~ main.cpp:52:9: note: 'rez1' was declared here 52 | int rez1, rez2; | ^~~~