Compilare: main.cpp: In function 'int BFS1()': main.cpp:36:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 36 | for (int i = 0; i < G[x].size(); i++) | ~~^~~~~~~~~~~~~ main.cpp: In function 'void BFS2(int, int*)': main.cpp:51:29: warning: 'sizeof' on array function parameter 'visited' will return size of 'int*' [-Wsizeof-array-argument] 51 | memset(visited,0,sizeof(visited)); | ~^~~~~~~~ main.cpp:49:25: note: declared here 49 | void BFS2(int start,int visited[]) | ~~~~^~~~~~~~~ main.cpp:51:22: warning: argument to 'sizeof' in 'void* memset(void*, int, size_t)' call is the same expression as the destination; did you mean to dereference it? [-Wsizeof-pointer-memaccess] 51 | memset(visited,0,sizeof(visited)); | ^~~~~~~~~~~~~~~ main.cpp:59:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 59 | for (i = 0; i < G[x].size(); i++) | ~~^~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:122:28: warning: suggest parentheses around '&&' within '||' [-Wparentheses] 122 | if(visited1[x] && visited2[y] || visited1[y] && visited2[x]) | ~~~~~~~~~~~~^~~~~~~~~~~~~~ main.cpp:126:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 126 | for (i = 0; i <ANS.size(); i++) | ~~^~~~~~~~~~~