제출 #31142

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
31142	2017-08-11 11:04:38	cscandkswon	크레이피쉬 글쓰는 기계 (IOI12_scrivener)	C++14	100 / 100	703 ms	92976 KiB

scrivener

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#include <bits/stdc++.h>
using namespace std;
const int MAXN=1000005;
int N, nod, now, cmd;
int spt[MAXN][21], A[MAXN], L[MAXN];
char let[MAXN];
void Init() {}
void TypeLetter(char c) {
    int i, p;
    A[++cmd]=now;
    let[++nod]=c;
    L[nod]=L[now]+1;
    spt[nod][0]=now;
    now=nod;
    for(i=1, p=now; ; i++){
        if(spt[spt[p][i-1]][i-1]==0) break;
        spt[p][i]=spt[spt[p][i-1]][i-1];
    }
}
void UndoCommands(int U) {
    A[++cmd]=now;
    now=A[cmd-U];
}
char GetLetter(int P) {
    int i, p=now, q=L[now]-P-1;
    for(i=20; i>=0; i--)if((1<<i)&q){
 
 
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• Subtask 1: 5 / 5
• Subtask 2: 7 / 7
• Subtask 3: 22 / 22
• Subtask 4: 26 / 26
• Subtask 5: 40 / 40