Compilare: main.cpp: In function 'void dfs(int)': main.cpp:35:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<g[nod].size(); i++){ ~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:71:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0; j<g[i].size(); j++) ~^~~~~~~~~~~~ main.cpp:96:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0; j<gcomp[i].size(); j++) ~^~~~~~~~~~~~~~~~ main.cpp:122:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0; j<gtcomp[i].size(); j++) ~^~~~~~~~~~~~~~~~~ main.cpp:133:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0; j<sol[i].size(); j++) ~^~~~~~~~~~~~~~ main.cpp:59:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] { freopen("drumuri5.in", "r", stdin); ^ main.cpp:60:41: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("drumuri5.out", "w", stdout); ^ main.cpp:62:26: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n, &m); ^ main.cpp:64:30: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &x, &y); ^