Compilare: user.cpp: In function ‘void citire()’: user.cpp:18:34: warning: array subscript has type ‘char’ [-Wchar-subscripts] for(int i=0;i<n;i++) ap[ch[i]]++; ^ user.cpp:19:39: warning: array subscript has type ‘char’ [-Wchar-subscripts] for(char x='a';x<='z';x++) if(ap[x]!=0) dd.pb(mp(ap[x],x)); ^ user.cpp:19:58: warning: array subscript has type ‘char’ [-Wchar-subscripts] for(char x='a';x<='z';x++) if(ap[x]!=0) dd.pb(mp(ap[x],x)); ^ user.cpp: In function ‘int try_again(int)’: user.cpp:29:26: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(good[ch[j]]) ^ user.cpp:31:29: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(apt[ch[j]]) ++bads; ^ user.cpp:32:26: warning: array subscript has type ‘char’ [-Wchar-subscripts] apt[ch[j]]=1; ^ user.cpp:36:50: warning: array subscript has type ‘char’ [-Wchar-subscripts] for(int j=i;j<min(n,i+per);j++) apt[ch[j]]=0; ^ user.cpp: In function ‘void solve()’: user.cpp:45:26: warning: array subscript has type ‘char’ [-Wchar-subscripts] good[dd[i].second]=1; ^ user.cpp: In function ‘int main()’: user.cpp:52:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("smooth2.in","r",stdin); ^ user.cpp:53:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("smooth2.out","w",stdout); ^ user.cpp: In function ‘void citire()’: user.cpp:16:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s",ch); ^