Compilare: user.cpp: In function ‘void dfsst(int)’: user.cpp:19:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<v[t].size();i++) { ^ user.cpp: In function ‘int main()’: user.cpp:108:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j,x; ^ user.cpp:109:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("omizi.in","r",stdin); ^ user.cpp:110:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("omizi.out","w",stdout); ^ user.cpp:111:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d",&n,&m); ^ user.cpp:113:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for (scanf("%d",&x);x;) { ^ user.cpp:115:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&x); ^ user.cpp:119:41: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("\n%d %c",&p[i].a,&p[i].c); ^