Eroare de compilare: main.cpp: In function 'void dfs_get_root(int)': main.cpp:181:3: error: 'viz' was not declared in this scope viz[nod] = comp; ^~~ main.cpp:182:19: error: 'begin' was not declared in this scope for (auto vec : nod) ^~~ main.cpp:182:19: note: suggested alternatives: In file included from /usr/include/x86_64-linux-gnu/c++/6/bits/stdc++.h:95:0, from main.cpp:1: /usr/include/c++/6/valarray:1206:5: note: 'std::begin' begin(const valarray<_Tp>& __va) ^~~~~ /usr/include/c++/6/valarray:1206:5: note: 'std::begin' main.cpp:182:19: error: 'end' was not declared in this scope for (auto vec : nod) ^~~ main.cpp:182:19: note: suggested alternatives: In file included from /usr/include/x86_64-linux-gnu/c++/6/bits/stdc++.h:95:0, from main.cpp:1: /usr/include/c++/6/valarray:1226:5: note: 'std::end' end(const valarray<_Tp>& __va) ^~~ /usr/include/c++/6/valarray:1226:5: note: 'std::end' main.cpp:183:9: error: 'vizz' was not declared in this scope if (vizz[vec] == 0) ^~~~ main.cpp:184:15: error: 'dfs' was not declared in this scope dfs (vec); ^ main.cpp: In function 'int main()': main.cpp:206:11: error: 'viz' was not declared in this scope if (viz[i] == 0 && gr[i].size () > 1) { ^~~ main.cpp:208:9: error: 'root' was not declared in this scope root[comp] = i; ^~~~ main.cpp:209:9: error: 'muc' was not declared in this scope muc[comp] = gr[i].back (); ^~~ main.cpp:191:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ("tubeyou.in", "r", stdin); ^ main.cpp:192:41: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ("tubeyou.out", "w", stdout); ^ main.cpp: In function 'char advance()': main.cpp:25:35: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread (buffer, SIZE, 1, stdin); ^ Non zero exit status: 1