Submission #866641

#TimeUsernameProblemLanguageResultExecution timeMemory
866641sofija6Password (RMI18_password)C++14
Compilation error
0 ms0 KiB
// Sample grader for contestants' use. // // Usage: place your input data in the file password.in in the format #include <bits/stdc++.h> int query(string str); string guess(int n, int s) { string ans=""; int cnt[26]={0}; for (int i=0;i<s;i++) { int l=1,r=n,mid; while (l<=r) { mid=(l+r)/2; string S=""; for (int j=1;j<=mid;j++) S+=(char)('a'+i); if (query(S)==mid) { cnt[i]=mid; l=mid+1; } else r=mid-1; } } for (int i=1;i<=n;i++) { int l=0,r=25,mid,lastt=-1; while (l<=r) { mid=(l+r)/2; string S=ans; for (int j=0;j<=mid;j++) { if (cnt[j]) S+=(char)(j+'a'); } if (query(S)>i-1) { lastt=mid; r=mid-1; } else l=mid+1; } ans+=(char)(lastt+'a'); cnt[lastt]--; } return ans; }

Compilation message (stderr)

password.cpp:6:11: error: 'string' was not declared in this scope; did you mean 'std::string'?
    6 | int query(string str);
      |           ^~~~~~
      |           std::string
In file included from /usr/include/c++/10/iosfwd:39,
                 from /usr/include/c++/10/ios:38,
                 from /usr/include/c++/10/istream:38,
                 from /usr/include/c++/10/sstream:38,
                 from /usr/include/c++/10/complex:45,
                 from /usr/include/c++/10/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:54,
                 from password.cpp:4:
/usr/include/c++/10/bits/stringfwd.h:79:33: note: 'std::string' declared here
   79 |   typedef basic_string<char>    string;
      |                                 ^~~~~~
password.cpp:8:1: error: 'string' does not name a type; did you mean 'stdin'?
    8 | string guess(int n, int s)
      | ^~~~~~
      | stdin