oj.uz

Submission #104261

# Submission time Handle Problem Language Result Execution time Memory
104261 2019-04-04T14:03:12 Z arman_ferdous Crayfish scrivener (IOI12_scrivener) C++14
0 / 100
 699 ms 87332 KB 
// #include "grader.h"
#include <bits/stdc++.h>
using namespace std;

const int N = 1e6+10;
char c[N];
int lev[N];
int cur, freePtr;
int p[N][20], state[N], ptr;

void Init() {
	lev[0] = -1;
	memset(p,-1,sizeof p);
	c[0] = '?';
	cur = 0; freePtr = 1;
	state[0] = cur; ptr = 0;
}

void TypeLetter(char L) {
	int idx = freePtr++;
	p[idx][0] = cur;
	c[idx] = L, lev[idx] = lev[cur] + 1;
	cur = idx;

	for(int j = 1; j < 20; j++)
		if(p[cur][j-1] + 1)
			p[cur][j] = p[p[cur][j-1]][j-1];
	state[++ptr] = cur;
}

void UndoCommands(int U) {
	state[ptr+1] = state[max(0, ptr - U)];
	ptr++;
	cur = state[ptr];
}

char GetLetter(int P) {
	int tmp = cur, need = lev[cur] - P;
	for(int j = 19; j >= 0; j--) 
		if(need >= (1<<j)) {
			need -= (1<<j);
			cur = p[cur][j];
		}
	return c[cur];
}

Compilation message

scrivener.cpp: In function 'char GetLetter(int)':
scrivener.cpp:38:6: warning: unused variable 'tmp' [-Wunused-variable]
  int tmp = cur, need = lev[cur] - P;
      ^~~

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 64 ms 78584 KB Output is correct
2 Incorrect 68 ms 78584 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 65 ms 78580 KB Output is correct
2 Incorrect 63 ms 78584 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3
0 / 22.0

# Verdict Execution time Memory Grader output
1 Incorrect 67 ms 78712 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 26.0

# Verdict Execution time Memory Grader output
1 Incorrect 699 ms 87332 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 40.0

# Verdict Execution time Memory Grader output
1 Incorrect 486 ms 87168 KB Output isn't correct
2 Halted 0 ms 0 KB -