oj.uz

Submission #18435

# Submission time Handle Problem Language Result Execution time Memory
18435 2016-02-01T15:05:59 Z suhgyuho_william Parrots (IOI11_parrots) C++
100 / 100
 69 ms 40896 KB 
#include "encoder.h"
#include "encoderlib.h"
#include <stdio.h>
#include <algorithm>

using namespace std;

// 256 H 261 > 256^64
int Ht[260][270][70];
int cntt[260][270];
int first;
int tmpt[70];

#define MOD 256

void sett(){
	int i,j,k;

	for(i=1; i<=256; i++){ cntt[i][0] = 1; Ht[i][0][1] = 1; }
	for(i=1; i<=256; i++){ cntt[i][1] = 1; Ht[i][1][1] = i; }
	for(i=1; i<=262; i++){ cntt[1][i] = 1; Ht[1][i][1] = 1; }
    for(i=2; i<=256; i++){
		for(j=2; j<=262; j++){
			for(k=1; k<=cntt[i][j-1]; k++) Ht[i][j][k] = Ht[i][j-1][k];
			for(k=1; k<=cntt[i-1][j]; k++) Ht[i][j][k] += Ht[i-1][j][k];
			for(k=1; k<=max(cntt[i][j-1],cntt[i-1][j]); k++){
				Ht[i][j][k+1] += (Ht[i][j][k] / MOD);
				Ht[i][j][k] %= MOD;
			}
			for(k=max(cntt[i][j-1],cntt[i-1][j])+1; ; k++){
				if(Ht[i][j][k] == 0) break;
				Ht[i][j][k+1] = (Ht[i][j][k] / MOD);
				Ht[i][j][k] %= MOD;
			}
			cntt[i][j] = k-1;
		}
    }
}

int comp(int n,int m,int len){
	if(cntt[n][m] > len) return -1;
	if(cntt[n][m] < len) return 1;
	int i;
	for(i=cntt[n][m]; i>=1; i--){
		if(Ht[n][m][i] > tmpt[i]) return -1;
		if(Ht[n][m][i] < tmpt[i]) return 1;
	}
	return 0;
}

void encode(int N, int M[]){
	int i,j,k;
	int x,sum,len;

	first++;
	if(first == 1) sett();

	len = N;
	for(i=1; i<=N; i++) tmpt[i] = 255;
	for(i=1; ; i++){
		if(comp(256,i,len) <= 0) break;
	}
	x = sum = i;
	for(i=0; i<N; i++) tmpt[i+1] = M[i];
	len = N;
	for(i=N; i>=1; i--){
		if(tmpt[i] != 0) break;
	}
	len = i;
	for(i=256; i>=2; i--){
		for(j=0; j<=x; j++){
			if(comp(i-1,x-j,len) < 0) break;
			for(k=1; k<=cntt[i-1][x-j]; k++){
				tmpt[k] -= Ht[i-1][x-j][k];
				if(tmpt[k] < 0){
					tmpt[k] += MOD;
					tmpt[k+1]--;
				}
			}
			for(k=cntt[i][j]+1; k<=len; k++){
				if(tmpt[k] < 0){
					tmpt[k] += MOD;
					tmpt[k+1]--;
				}else break;
			}
			for(k=len; k>=1; k--){
				if(tmpt[k] != 0) break;
			}
			len = k;
		}
		for(k=0; k<j; k++) send(i-1);
		x -= j;
	}
}

#include "decoder.h"
#include "decoderlib.h"
#include <algorithm>
#include <stdlib.h>
#include <stdio.h>
using namespace std;

int H[260][270][70];
int cnt[260][270];
int tmp[70];

#define MOD 256

void setting(){
	int i,j,k;

	for(i=1; i<=256; i++){ cnt[i][0] = 1; H[i][0][1] = 1; }
	for(i=1; i<=256; i++){ cnt[i][1] = 1; H[i][1][1] = i; }
	for(i=1; i<=262; i++){ cnt[1][i] = 1; H[1][i][1] = 1; }
    for(i=2; i<=256; i++){
		for(j=2; j<=262; j++){
			for(k=1; k<=cnt[i][j-1]; k++) H[i][j][k] = H[i][j-1][k];
			for(k=1; k<=cnt[i-1][j]; k++) H[i][j][k] += H[i-1][j][k];
			for(k=1; k<=max(cnt[i][j-1],cnt[i-1][j]); k++){
				H[i][j][k+1] += (H[i][j][k] / MOD);
				H[i][j][k] %= MOD;
			}
			for(k=max(cnt[i][j-1],cnt[i-1][j])+1; ; k++){
				if(H[i][j][k] == 0) break;
				H[i][j][k+1] = (H[i][j][k] / MOD);
				H[i][j][k] %= MOD;
			}
			cnt[i][j] = k-1;
		}
    }
}

int compare(int n,int m,int len){
	if(cnt[n][m] > len) return -1;
	if(cnt[n][m] < len) return 1;
	int i;
	for(i=cnt[n][m]; i>=1; i--){
		if(H[n][m][i] > tmp[i]) return -1;
		if(H[n][m][i] < tmp[i]) return 1;
	}
	return 0;
}

int firsttime;
int many[260];
int ans[100];

void decode(int N, int L, int X[]){
	int i,j,k;
	int x,sum,len;

	firsttime++;
	if(firsttime == 1) setting();
	for(i=1; i<=N; i++) tmp[i] = 255;
	len = N;
	for(i=1; i<=262; i++){
		if(compare(256,i,len) <= 0) break;
	}
	x = sum = i;
	for(i=0; i<256; i++) many[i] = 0;
	for(i=0; i<L; i++) many[X[i]]++;
	for(i=1; i<=N; i++) ans[i] = 0;
	for(i=255; i>=1; i--){
		for(j=0; j<many[i]; j++){
			for(k=1; k<=cnt[i][x-j]; k++){
				ans[k] += H[i][x-j][k];
			}
		}
		x -= many[i];
	}
	for(k=1; k<N; k++){
		ans[k+1] += (ans[k]/256);
		ans[k] %= 256;
	}
	for(k=1; k<=N; k++) output(ans[k]);
}

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 49 ms 39216 KB Output is correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 50 ms 40112 KB Output is correct
2 Correct 50 ms 40352 KB Output is correct
3 Correct 59 ms 40640 KB Output is correct
4 Correct 52 ms 40640 KB Output is correct

Subtask #3
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 51 ms 40640 KB Output is correct
2 Correct 51 ms 40680 KB Output is correct
3 Correct 50 ms 40680 KB Output is correct
4 Correct 53 ms 40680 KB Output is correct

Subtask #4
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 57 ms 40680 KB Output is correct
2 Correct 59 ms 40896 KB Output is correct
3 Correct 51 ms 40896 KB Output is correct
4 Correct 52 ms 40896 KB Output is correct
5 Correct 52 ms 40896 KB Output is correct
6 Correct 53 ms 40896 KB Output is correct

Subtask #5
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 52 ms 40896 KB Output is correct - P = 1.750000
2 Correct 52 ms 40896 KB Output is correct - P = 2.437500
3 Correct 56 ms 40896 KB Output is correct - P = 2.484848
4 Correct 56 ms 40896 KB Output is correct - P = 3.300000
5 Correct 57 ms 40896 KB Output is correct - P = 3.850000
6 Correct 69 ms 40896 KB Output is correct - P = 4.031746
7 Correct 61 ms 40896 KB Output is correct - P = 4.093750