Compilare: main.cpp: In function 'std::pair<int, int> find_min()': main.cpp:30:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 30 | if (idx[j] < who[j].size()) | ~~~~~~~^~~~~~~~~~~~~~~ main.cpp: In function 'void baga(int, int)': main.cpp:45:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 45 | while (idx[category] < who[category].size() and idx[category] < need) | ~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:68:11: warning: too many arguments for format [-Wformat-extra-args] 68 | scanf("%d %d %d", &n, &s, &k1, &k2); | ^~~~~~~~~~ main.cpp:102:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 102 | for (i = 0; i <= who[3].size(); i++) | ~~^~~~~~~~~~~~~~~~