제출 #218961

#제출 시각아이디문제언어결과실행 시간메모리
218961KoalaMuchCrayfish scrivener (IOI12_scrivener)C++14
5 / 100
185 ms5240 KiB
#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];
}
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