Submission #975749

#	Time	Username	Problem	Language	Result	Execution time	Memory
975749		marinaluca	Crayfish scrivener (IOI12_scrivener)	C++14	Compilation error	0 ms	0 KiB

scrivener

const int NMAX = 1e6 + 10;
int v[NMAX], k, rez[NMAX], mat[20][NMAX];
char ans[NMAX];
void Init(){}
void Typeletter (char L){
    ans[v[++ k] = k] = L;
    rez[k] = rez[mat[0][k] = v[k - 1]] + 1;
    for (int i = 1; i < 20; ++ i){
        mat[i][k] = mat[i - 1][mat[i - 1][k]];
    }
}
void UndoCommands(int U){
    v[++ k] = v[k - P - 1];
}
char GetLetter(int P){
    int a = v[k];
    for (int i = 20; i --;){
        if (rez[mat[i][a]] > P)
        a = mat[i][a];
    }
    return ans[a];
}

Compilation message (stderr)

scrivener.cpp: In function 'void UndoCommands(int)':
scrivener.cpp:13:21: error: 'P' was not declared in this scope
   13 |     v[++ k] = v[k - P - 1];
      |                     ^