Submission #7277

#	Time	Username	Problem	Language	Result	Execution time	Memory
7277		kriii	Crayfish scrivener (IOI12_scrivener)	C++98	0 / 100	276 ms	88676 KiB

scrivener

#include <map>
using namespace std;

map<char, int> trie[1000001];
int node,now,time,hist[1000001]; char get[10000001];

void Init() {}

void TypeLetter(char L) {
	int &n = trie[now][L];
	if (n == 0){
		n = ++node;
		get[n] = L;
	}
	hist[++time] = now = n;
}

void UndoCommands(int U) {
	now = hist[time-U];
	hist[++time] = now;
}

char GetLetter(int P) {
	return get[now];
}

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