Compilare: main.cpp:3:11: warning: literal operator suffixes not preceded by '_' are reserved for future standardization #define s second ^ main.cpp:3:11: warning: literal operator suffixes not preceded by '_' are reserved for future standardization #define s second ^ main.cpp:3:11: warning: literal operator suffixes not preceded by '_' are reserved for future standardization #define s second ^ main.cpp:3:11: warning: literal operator suffixes not preceded by '_' are reserved for future standardization #define s second ^ main.cpp: In function 'void dfs(int)': main.cpp:18:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < v[x].size(); ++i) { ~~^~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:47:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] fprintf(fo, "%d\n", (rez.size() == n) ? 1:0); ~~~~~~~~~~~^~~~ main.cpp:48:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (rez.size() == n) ~~~~~~~~~~~^~~~ main.cpp:32:22: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fi, "%d", &n); ^ main.cpp:34:30: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fi, "%d %d", &a, &b); ^