Submission #1673536


Source Code Expand

#include <bits/stdc++.h>
#include <string>
using namespace std;
typedef long long ll;
string a_str, b_str;
ll dp[20][2][2];
ll dfs(ll keta, bool tight, bool ok) {
  if(keta == b_str.size()) {
    if(ok)
      return 1;
    else
      return 0;
  }


  if(dp[keta][tight][ok] != -1)
    return dp[keta][tight][ok];

  ll ret = 0;
  int digit = b_str[keta] - '0';
  int lim = tight ? digit : 9;
  for(int i=0;i<=lim;i++) {
    ret += dfs(keta+1, tight && i == digit, ok || (i == 4 || i == 9));
  }

  return dp[keta][tight][ok] = ret;

}
int main() {
  ll a, b;
  cin >> a >> b;
  a--;
  a_str = to_string(a), b_str = to_string(b);

  memset(dp, -1, sizeof(dp));
  ll high = dfs(0, true, false);
  memset(dp, -1, sizeof(dp));
  b_str = a_str;
  ll low = dfs(0, true, false);
  cout << high - low << endl;
}

Submission Info

Submission Time
Task D - 禁止された数字
User hkr
Language C++14 (GCC 5.4.1)
Score 100
Code Size 846 Byte
Status AC
Exec Time 1 ms
Memory 256 KB

Judge Result

Set Name Sample Subtask1 Subtask2
Score / Max Score 0 / 0 30 / 30 70 / 70
Status
AC × 4
AC × 16
AC × 39
Set Name Test Cases
Sample subtask0_sample01.txt, subtask0_sample02.txt, subtask0_sample03.txt, subtask0_sample04.txt
Subtask1 subtask1_01.txt, subtask1_02.txt, subtask1_03.txt, subtask1_04.txt, subtask1_05.txt, subtask1_06.txt, subtask1_07.txt, subtask1_08.txt, subtask1_09.txt, subtask1_10.txt, subtask1_11.txt, subtask1_12.txt, subtask1_13.txt, subtask0_sample01.txt, subtask0_sample02.txt, subtask0_sample03.txt
Subtask2 subtask0_sample01.txt, subtask0_sample02.txt, subtask0_sample03.txt, subtask0_sample04.txt, subtask1_01.txt, subtask1_02.txt, subtask1_03.txt, subtask1_04.txt, subtask1_05.txt, subtask1_06.txt, subtask1_07.txt, subtask1_08.txt, subtask1_09.txt, subtask1_10.txt, subtask1_11.txt, subtask1_12.txt, subtask1_13.txt, subtask2_01.txt, subtask2_02.txt, subtask2_03.txt, subtask2_04.txt, subtask2_05.txt, subtask2_06.txt, subtask2_07.txt, subtask2_08.txt, subtask2_09.txt, subtask2_10.txt, subtask2_11.txt, subtask2_12.txt, subtask2_13.txt, subtask2_14.txt, subtask2_15.txt, subtask2_16.txt, subtask2_17.txt, subtask2_18.txt, subtask2_19.txt, subtask2_20.txt, subtask2_21.txt, subtask2_22.txt
Case Name Status Exec Time Memory
subtask0_sample01.txt AC 1 ms 256 KB
subtask0_sample02.txt AC 1 ms 256 KB
subtask0_sample03.txt AC 1 ms 256 KB
subtask0_sample04.txt AC 1 ms 256 KB
subtask1_01.txt AC 1 ms 256 KB
subtask1_02.txt AC 1 ms 256 KB
subtask1_03.txt AC 1 ms 256 KB
subtask1_04.txt AC 1 ms 256 KB
subtask1_05.txt AC 1 ms 256 KB
subtask1_06.txt AC 1 ms 256 KB
subtask1_07.txt AC 1 ms 256 KB
subtask1_08.txt AC 1 ms 256 KB
subtask1_09.txt AC 1 ms 256 KB
subtask1_10.txt AC 1 ms 256 KB
subtask1_11.txt AC 1 ms 256 KB
subtask1_12.txt AC 1 ms 256 KB
subtask1_13.txt AC 1 ms 256 KB
subtask2_01.txt AC 1 ms 256 KB
subtask2_02.txt AC 1 ms 256 KB
subtask2_03.txt AC 1 ms 256 KB
subtask2_04.txt AC 1 ms 256 KB
subtask2_05.txt AC 1 ms 256 KB
subtask2_06.txt AC 1 ms 256 KB
subtask2_07.txt AC 1 ms 256 KB
subtask2_08.txt AC 1 ms 256 KB
subtask2_09.txt AC 1 ms 256 KB
subtask2_10.txt AC 1 ms 256 KB
subtask2_11.txt AC 1 ms 256 KB
subtask2_12.txt AC 1 ms 256 KB
subtask2_13.txt AC 1 ms 256 KB
subtask2_14.txt AC 1 ms 256 KB
subtask2_15.txt AC 1 ms 256 KB
subtask2_16.txt AC 1 ms 256 KB
subtask2_17.txt AC 1 ms 256 KB
subtask2_18.txt AC 1 ms 256 KB
subtask2_19.txt AC 1 ms 256 KB
subtask2_20.txt AC 1 ms 256 KB
subtask2_21.txt AC 1 ms 256 KB
subtask2_22.txt AC 1 ms 256 KB