Compilare: user.cpp: In function ‘int main()’: user.cpp:35:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<v[poz].size();j++) if(vaz1[v[poz][j]]==0) if(s[v[poz][j]]<minn) {minn=s[v[poz][j]];li=v[poz][j];} ^ user.cpp:14:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("revolutie.in","r",stdin); ^ user.cpp:15:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("revolutie.out","w",stdout); ^ user.cpp:17:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.cpp:22:34: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&v1[i][j]); ^ user.cpp:30:26: warning: ‘li’ may be used uninitialized in this function [-Wmaybe-uninitialized] int minn=1e9,poz,li; ^