Compilare: user.cpp: In function ‘int main()’: user.cpp:70:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<g[node].size();++i) ^ user.cpp:103:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<arb[node].size();++i) ^ user.cpp:22:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j; ^ user.cpp:51:15: warning: unused variable ‘add’ [-Wunused-variable] int cnode,add,start,dmin=1e9;; ^ user.cpp:20:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("apdm.in","r",stdin); ^ user.cpp:21:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("apdm.out","w",stdout); ^ user.cpp:24:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&m); ^ user.cpp:44:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&x,&y); ^