Compilare: In file included from /usr/include/c++/6/cassert:44:0, from /usr/include/x86_64-linux-gnu/c++/6/bits/stdc++.h:33, from main.cpp:1: main.cpp: In function 'void getEdges()': main.cpp:53:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] assert(x[i].size() == r || x[i].size() == r - 1); ~~~~~~~~~~~~^~~~ main.cpp:53:48: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] assert(x[i].size() == r || x[i].size() == r - 1); ~~~~~~~~~~~~^~~~~~~~ main.cpp:57:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(x[u].size() == r) ~~~~~~~~~~~~^~~~ main.cpp: In function 'void getRez()': main.cpp:121:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(x[i].size() == r && st[i] == 0 && dr[i] == 0) ~~~~~~~~~~~~^~~~ main.cpp:130:22: warning: suggest parentheses around '&&' within '||' [-Wparentheses] if(i < u && dr[i] == u || dr[u] == i) ~~~~~~^~~~~~~~~~~~~