답안 #19828

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
19828	2016-02-25T06:04:06 Z	xhae	동전 (kriii4_E)	C++14	100 / 100	154 ms	2744 KB

D

#include <math.h>
#include <stdio.h>
#include <string.h>
#include <vector>
#include <string>
#include <queue>
#include <map>
#include <algorithm>
#include <cmath>
#include <iostream>
#include <sstream>
#include <set>
using namespace std;

const int mmod = 1000000007;

int prv[256][512]; // successive previous H, current grundy
int nxt[256][512];

vector<int> grundy;

void run_init(int n)
{
  for (int i=0; i<256; i++)
    for (int j=0; j<512; j++)
      prv[i][j] = nxt[i][j] = 0;

  prv[0][0] = 1;

  for (int i=0; i<=n; i++) {
    for (int j=0; j<=i; j++)
      for (int k=0; k<512; k++) {
        if (i < n) {
          // H
          nxt[j+1][k] = (nxt[j+1][k] + prv[j][k]) % mmod;
        }
        if (j < n) {
          // T
          nxt[0][k^grundy[j]] = (nxt[0][k^grundy[j]] + prv[j][k]) % mmod;
        }
      }

    for (int j=0; j<256; j++)
      for (int k=0; k<512; k++) prv[j][k] = nxt[j][k], nxt[j][k] = 0;
  }

}

void run_grundy(int n)
{
  for (int i=0; i<256; i++)
    for (int j=0; j<512; j++)
      prv[i][j] = nxt[i][j] = 0;

  prv[0][0] = 1;

  for (int i=0; i<=n; i++) {
    for (int j=0; j<=i; j++)
      for (int k=0; k<512; k++) {
        if (i < n) {
          // H
          nxt[j+1][k] = (nxt[j+1][k] + prv[j][k]) % mmod;
        }
        {
          // T
          nxt[0][k^grundy[j]] = (nxt[0][k^grundy[j]] + prv[j][k]) % mmod;
        }
      }

    for (int j=0; j<256; j++)
      for (int k=0; k<512; k++) prv[j][k] = nxt[j][k], nxt[j][k] = 0;
  }

}

int main()
{
  int n;
  cin >> n;

  grundy.push_back(0);
  for (int i=1; i<=n; i++) {
/*    run_init(i);

    int ii = 0;
    while (prv[0][ii]) ii ++;
    grundy.push_back(ii);*/
    grundy.push_back(i);
  }

/*  for (int i=0; i<=n; i++) printf("%d ", grundy[i]);
  printf("\n");
  return 0;*/

  run_grundy(n);

  printf("%d\n", prv[0][0]);
}

Subtask #1

5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	2744 KB	Output is correct
2	Correct	0 ms	2744 KB	Output is correct
3	Correct	0 ms	2744 KB	Output is correct
4	Correct	0 ms	2744 KB	Output is correct
5	Correct	0 ms	2744 KB	Output is correct
6	Correct	2 ms	2744 KB	Output is correct
7	Correct	0 ms	2744 KB	Output is correct
8	Correct	0 ms	2744 KB	Output is correct
9	Correct	3 ms	2744 KB	Output is correct
10	Correct	3 ms	2744 KB	Output is correct
11	Correct	3 ms	2744 KB	Output is correct
12	Correct	0 ms	2744 KB	Output is correct
13	Correct	4 ms	2744 KB	Output is correct
14	Correct	4 ms	2744 KB	Output is correct
15	Correct	2 ms	2744 KB	Output is correct

Subtask #2

95.0 / 95.0

#	결과	실행 시간	메모리	Grader output
1	Correct	49 ms	2744 KB	Output is correct
2	Correct	82 ms	2744 KB	Output is correct
3	Correct	11 ms	2744 KB	Output is correct
4	Correct	32 ms	2744 KB	Output is correct
5	Correct	23 ms	2744 KB	Output is correct
6	Correct	41 ms	2744 KB	Output is correct
7	Correct	113 ms	2744 KB	Output is correct
8	Correct	134 ms	2744 KB	Output is correct
9	Correct	53 ms	2744 KB	Output is correct
10	Correct	130 ms	2744 KB	Output is correct
11	Correct	35 ms	2744 KB	Output is correct
12	Correct	33 ms	2744 KB	Output is correct
13	Correct	123 ms	2744 KB	Output is correct
14	Correct	89 ms	2744 KB	Output is correct
15	Correct	52 ms	2744 KB	Output is correct
16	Correct	14 ms	2744 KB	Output is correct
17	Correct	151 ms	2744 KB	Output is correct
18	Correct	15 ms	2744 KB	Output is correct
19	Correct	80 ms	2744 KB	Output is correct
20	Correct	21 ms	2744 KB	Output is correct
21	Correct	103 ms	2744 KB	Output is correct
22	Correct	85 ms	2744 KB	Output is correct
23	Correct	63 ms	2744 KB	Output is correct
24	Correct	45 ms	2744 KB	Output is correct
25	Correct	30 ms	2744 KB	Output is correct
26	Correct	10 ms	2744 KB	Output is correct
27	Correct	123 ms	2744 KB	Output is correct
28	Correct	10 ms	2744 KB	Output is correct
29	Correct	121 ms	2744 KB	Output is correct
30	Correct	154 ms	2744 KB	Output is correct