oj.uz

답안 #170312

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
170312 2019-12-24T19:47:46 Z ngmh Palindrome-Free Numbers (BOI13_numbers) C++11
100 / 100
 3 ms 632 KB 
#include <bits/stdc++.h>
using namespace std;

long long a, b, dp[20][11][11][3][3];
vector<long long> number;

long long derp(long long idx, long long prev1, long long prev2, long long same, long long allzero){
	if(idx == number.size()) dp[idx][prev1][prev2][same][allzero] = 1;
	if(dp[idx][prev1][prev2][same][allzero] != -1) return dp[idx][prev1][prev2][same][allzero];
	long long sum = 0, limit;
	if((!allzero && same) || (allzero && idx == 0)) limit = number[idx];
	else limit = 9;
	for(int i = 0; i <= limit; i++){
		if(allzero){
			if(i == 0) sum += derp(idx+1, 10, 10, 1, 1);
			else sum += derp(idx+1, i, 10, (idx == 0 && i == limit), 0);
		} else if(i != prev1 && i != prev2){
			if(same && i == number[idx]) sum += derp(idx+1, i, prev1, 1, 0);
			else sum += derp(idx+1, i, prev1, 0, 0);
		}
	}
	return dp[idx][prev1][prev2][same][allzero] = sum;
}

long long solve(long long num){
	if(num < 0) return 0;
	number.clear();
	while(num > 0){ number.push_back(num%10); num /= 10; }
	reverse(number.begin(), number.end());
	memset(dp, -1, sizeof(dp));
	return derp(0, 10, 10, 1, 1);
}

int main(){
	cin >> a >> b;
	cout << solve(b)-solve(a-1);
}

Compilation message

numbers.cpp: In function 'long long int derp(long long int, long long int, long long int, long long int, long long int)':
numbers.cpp:8:9: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  if(idx == number.size()) dp[idx][prev1][prev2][same][allzero] = 1;
     ~~~~^~~~~~~~~~~~~~~~

Subtask #1
25.0 / 25.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 632 KB Output is correct
2 Correct 2 ms 504 KB Output is correct
3 Correct 2 ms 504 KB Output is correct
4 Correct 2 ms 504 KB Output is correct
5 Correct 2 ms 508 KB Output is correct
6 Correct 2 ms 504 KB Output is correct
7 Correct 2 ms 508 KB Output is correct
8 Correct 2 ms 632 KB Output is correct
9 Correct 2 ms 504 KB Output is correct
10 Correct 2 ms 504 KB Output is correct
11 Correct 2 ms 504 KB Output is correct
12 Correct 2 ms 552 KB Output is correct
13 Correct 2 ms 504 KB Output is correct
14 Correct 2 ms 504 KB Output is correct
15 Correct 2 ms 504 KB Output is correct
16 Correct 2 ms 504 KB Output is correct
17 Correct 2 ms 504 KB Output is correct
18 Correct 2 ms 480 KB Output is correct
19 Correct 2 ms 504 KB Output is correct
20 Correct 2 ms 504 KB Output is correct

Subtask #2
75.0 / 75.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 504 KB Output is correct
2 Correct 2 ms 508 KB Output is correct
3 Correct 2 ms 504 KB Output is correct
4 Correct 2 ms 504 KB Output is correct
5 Correct 2 ms 504 KB Output is correct
6 Correct 2 ms 504 KB Output is correct
7 Correct 2 ms 508 KB Output is correct
8 Correct 2 ms 504 KB Output is correct
9 Correct 2 ms 504 KB Output is correct
10 Correct 2 ms 508 KB Output is correct
11 Correct 2 ms 508 KB Output is correct
12 Correct 2 ms 504 KB Output is correct
13 Correct 2 ms 504 KB Output is correct
14 Correct 2 ms 508 KB Output is correct
15 Correct 2 ms 504 KB Output is correct
16 Correct 2 ms 504 KB Output is correct
17 Correct 2 ms 504 KB Output is correct
18 Correct 2 ms 504 KB Output is correct
19 Correct 2 ms 504 KB Output is correct
20 Correct 2 ms 504 KB Output is correct
21 Correct 2 ms 504 KB Output is correct
22 Correct 2 ms 504 KB Output is correct
23 Correct 2 ms 504 KB Output is correct
24 Correct 2 ms 504 KB Output is correct
25 Correct 2 ms 504 KB Output is correct
26 Correct 2 ms 504 KB Output is correct
27 Correct 2 ms 504 KB Output is correct
28 Correct 2 ms 424 KB Output is correct
29 Correct 3 ms 620 KB Output is correct
30 Correct 2 ms 504 KB Output is correct
31 Correct 2 ms 504 KB Output is correct
32 Correct 2 ms 504 KB Output is correct
33 Correct 2 ms 504 KB Output is correct
34 Correct 2 ms 504 KB Output is correct
35 Correct 2 ms 504 KB Output is correct
36 Correct 2 ms 504 KB Output is correct
37 Correct 2 ms 504 KB Output is correct
38 Correct 3 ms 504 KB Output is correct
39 Correct 2 ms 504 KB Output is correct
40 Correct 2 ms 504 KB Output is correct
41 Correct 2 ms 504 KB Output is correct
42 Correct 2 ms 504 KB Output is correct
43 Correct 2 ms 504 KB Output is correct
44 Correct 2 ms 504 KB Output is correct
45 Correct 2 ms 504 KB Output is correct