Compilare: user.cpp: In function ‘void find_(int)’: user.cpp:51:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(edge_ptr[n1] < g[n1].size()) { ~~~~~~~~~~~~~^~~~~~~~~~~~~~ user.cpp: In function ‘int paralel(int, int)’: user.cpp:68:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(k1 < g[n1].size()) { ~~~^~~~~~~~~~~~~~ user.cpp:75:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(k1<g[n1].size()){ ~~^~~~~~~~~~~~~ user.cpp:88:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(k2 < g[n2].size()) { ~~~^~~~~~~~~~~~~~ user.cpp:95:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(k1<g[n1].size()){ ~~^~~~~~~~~~~~~ user.cpp:67:15: warning: unused variable ‘ok’ [-Wunused-variable] bool ok = 0; ^~ In file included from /usr/include/c++/6/cassert:44:0, from /usr/include/x86_64-linux-gnu/c++/6/32/bits/stdc++.h:33, from user.cpp:1: user.cpp: In function ‘void disconect(int, int, int)’: user.cpp:124:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] assert(am_vizitat.size() <= 4 * newSz); ~~~~~~~~~~~~~~~~~~^~~~~~~~ user.cpp:116:9: warning: unused variable ‘tt’ [-Wunused-variable] int tt = am_vizitat.size(); ^~ user.cpp: In function ‘bool pot(int)’: user.cpp:132:5: warning: this ‘for’ clause does not guard... [-Wmisleading-indentation] for(int i = 1; i < N; ++i) ^~~ user.cpp:134:7: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the ‘for’ for(int i=1;i<n;++i)went[i]=0,cant[i]=0; ^~~