Compilare: main.cpp: In lambda function: main.cpp:33:19: warning: suggest explicit braces to avoid ambiguous 'else' [-Wdangling-else] 33 | if(x.a == y.a) | ^ main.cpp: In function 'int main()': main.cpp:39:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<diff>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 39 | for(int i = 0; i < aux.size()-1; i++) | ~~^~~~~~~~~~~~~~