Compilare: main.cpp:8:140: warning: built-in function 'ccos' declared as non-function [-Wbuiltin-declaration-mismatch] 8 | int n,m,i,must,mudr,chain,lvl[300005],si[300005],maf[300005],cnt[300005],pos[300005],id[300005],first[300005],val[300005],tata[300005],cer,ccos,sum1,sum2; | ^~~~ main.cpp: In function 'void dfs(int, int, int)': main.cpp:15:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 15 | for (int i=0;i<v[nod].size();++i) | ~^~~~~~~~~~~~~~ main.cpp: In function 'void split(int, int)': main.cpp:34:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 34 | for (int i=0;i<v[nod].size();++i) | ~^~~~~~~~~~~~~~