Compilare: main.cpp: In function 'int Find(int, int)': main.cpp:25:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 25 | for(int i = 0; i < v[x].size(); i++) | ~~^~~~~~~~~~~~~ main.cpp: At global scope: main.cpp:49:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type] 49 | main() | ^~~~