Submission #218961

#	Time	Username	Problem	Language	Result	Execution time	Memory
218961		KoalaMuch	Crayfish scrivener (IOI12_scrivener)	C++14	5 / 100	185 ms	5240 KiB

scrivener

#include<bits/stdc++.h>
using namespace std;
const int N = 1e6+5;
char s[N];
int len[N];
int opr;
int n;
void Init() {}
void TypeLetter(char L) {
    s[n++] = L;
    len[++opr] = n;
}
void UndoCommands(int U) {
    n = len[max(0,opr-U-1)];
    len[++opr] = n;
}
char GetLetter(int P) {
    return P>=n ? '\0' : s[P];
}

• Subtask 1: 5 / 5
• Subtask 2: 0 / 7
• Subtask 3: 0 / 22
• Subtask 4: 0 / 26
• Subtask 5: 0 / 40