Compilare: main.cpp: In function 'void dfs(int)': main.cpp:18:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( int i = 0; i < graph[node].size(); i++ ){ ~~^~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void calc(int)': main.cpp:30:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( int i = 0; i < graph[node].size(); i++ ){ ~~^~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:55:17: warning: 'rad' may be used uninitialized in this function [-Wmaybe-uninitialized] calc ( rad ); ^