Submission #631263

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
631263	2022-08-18T01:38:42 Z	uylulu	Palindrome-Free Numbers (BOI13_numbers)	C++14	72.5 / 100	1 ms	340 KB

numbers

#include<bits/stdc++.h>
using namespace std;

#define int long long
#define ld long double
#define endl "\n"

const int N = 19;

int dp[N + 1][12][12][2];

string s;

int f(int pos,int i1,int i2,int tight) {
	if(pos == s.size()) return 1;
	if(dp[pos][i1][i2][tight] != -1) return dp[pos][i1][i2][tight];
	int res = 0,lim = 9;
	if(tight) {
		lim = s[pos] - '0';
	}
	for(int i = 0;i <= lim;i++) {
		if(i == i1 || i == i2) continue;
		int ns = 0;
		if(i == lim) ns = tight;
		res += f(pos + 1,i2,i,ns);
	}
	return dp[pos][i1][i2][tight] = res;
}

int help(int x) {
	s = to_string(x);
	memset(dp,-1,sizeof(dp));
	return f(0,11,11,1);
}

signed main() {
	// freopen("in.txt","r",stdin);
	// freopen("out.txt","w",stdout);
	
	int a,b;
	cin>>a>>b;
	if(a == 0) {
		cout<<help(b)<<endl;
	} else {
		cout<<help(b) - help(a - 1)<<endl;		
	}
}

Compilation message

numbers.cpp: In function 'long long int f(long long int, long long int, long long int, long long int)':
numbers.cpp:15:9: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   15 |  if(pos == s.size()) return 1;
      |     ~~~~^~~~~~~~~~~

Subtask #1

12.5 / 25.0

#	Verdict	Execution time	Memory	Grader output
1	Incorrect	0 ms	340 KB	Output isn't correct
2	Incorrect	0 ms	340 KB	Output isn't correct
3	Correct	0 ms	340 KB	Output is correct
4	Incorrect	1 ms	340 KB	Output isn't correct
5	Incorrect	1 ms	340 KB	Output isn't correct
6	Incorrect	0 ms	340 KB	Output isn't correct
7	Incorrect	0 ms	340 KB	Output isn't correct
8	Incorrect	0 ms	340 KB	Output isn't correct
9	Correct	0 ms	340 KB	Output is correct
10	Correct	0 ms	340 KB	Output is correct
11	Correct	0 ms	340 KB	Output is correct
12	Correct	0 ms	340 KB	Output is correct
13	Correct	0 ms	340 KB	Output is correct
14	Incorrect	0 ms	340 KB	Output isn't correct
15	Incorrect	1 ms	340 KB	Output isn't correct
16	Correct	0 ms	340 KB	Output is correct
17	Correct	0 ms	340 KB	Output is correct
18	Correct	0 ms	340 KB	Output is correct
19	Correct	1 ms	340 KB	Output is correct
20	Incorrect	0 ms	340 KB	Output isn't correct

Subtask #2

60.0 / 75.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	340 KB	Output is correct
2	Correct	1 ms	340 KB	Output is correct
3	Correct	0 ms	340 KB	Output is correct
4	Correct	1 ms	340 KB	Output is correct
5	Incorrect	0 ms	340 KB	Output isn't correct
6	Correct	0 ms	340 KB	Output is correct
7	Incorrect	0 ms	212 KB	Output isn't correct
8	Incorrect	0 ms	340 KB	Output isn't correct
9	Incorrect	1 ms	340 KB	Output isn't correct
10	Incorrect	0 ms	340 KB	Output isn't correct
11	Correct	1 ms	340 KB	Output is correct
12	Incorrect	0 ms	340 KB	Output isn't correct
13	Incorrect	1 ms	340 KB	Output isn't correct
14	Incorrect	1 ms	340 KB	Output isn't correct
15	Incorrect	0 ms	340 KB	Output isn't correct
16	Correct	1 ms	340 KB	Output is correct
17	Correct	0 ms	340 KB	Output is correct
18	Correct	0 ms	340 KB	Output is correct
19	Correct	1 ms	340 KB	Output is correct
20	Correct	0 ms	340 KB	Output is correct
21	Correct	1 ms	340 KB	Output is correct
22	Correct	0 ms	340 KB	Output is correct
23	Correct	1 ms	340 KB	Output is correct
24	Correct	1 ms	340 KB	Output is correct
25	Correct	0 ms	340 KB	Output is correct
26	Correct	1 ms	340 KB	Output is correct
27	Correct	1 ms	340 KB	Output is correct
28	Correct	1 ms	340 KB	Output is correct
29	Correct	1 ms	340 KB	Output is correct
30	Correct	1 ms	340 KB	Output is correct
31	Correct	1 ms	340 KB	Output is correct
32	Correct	1 ms	340 KB	Output is correct
33	Correct	1 ms	340 KB	Output is correct
34	Correct	0 ms	340 KB	Output is correct
35	Correct	1 ms	340 KB	Output is correct
36	Correct	0 ms	340 KB	Output is correct
37	Correct	1 ms	340 KB	Output is correct
38	Correct	1 ms	340 KB	Output is correct
39	Correct	0 ms	340 KB	Output is correct
40	Correct	1 ms	340 KB	Output is correct
41	Correct	0 ms	340 KB	Output is correct
42	Correct	0 ms	340 KB	Output is correct
43	Correct	0 ms	340 KB	Output is correct
44	Correct	0 ms	340 KB	Output is correct
45	Correct	1 ms	340 KB	Output is correct