Compilare: main.cpp: In function 'int main()': main.cpp:82:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 82 | for(int i1 = 0; i1 < b.size() - 2; i1++){ | ~~~^~~~~~~~~~~~~~ main.cpp:83:37: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 83 | for(int i2 = i1 + 1; i2 < b.size() - 1; i2++){ | ~~~^~~~~~~~~~~~~~ main.cpp:84:41: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 84 | for(int i3 = i2 + 1; i3 < b.size(); i3++){ | ~~~^~~~~~~~~~