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Submission #488809

# Submission time Handle Problem Language Result Execution time Memory
488809 2021-11-20T14:06:03 Z dpw4112001 Palindrome-Free Numbers (BOI13_numbers) C++14
0 / 100
 1000 ms 720 KB 
#include<bits/stdc++.h>
using namespace std;
#define int long long

const int mod = 1e9 + 7;
int dp[18][11][11][2];


int solve(string s,int i,int last,int secondlast,int tight)
{
    if(i == s.length())
    {
        return 1;
    }
    if(dp[i][last][secondlast][tight]!= -1)return dp[i][last][secondlast][tight];

    int limit = tight ? s[i] - '0' : 9;
    int ans = 0;


    for(int d = 0;d<=limit;d++)
    {
        if(d == last)
            continue;
        if(d == secondlast)
            continue;
        ans = ans + solve(s,i+1,d,last,tight && (d == limit));
    }

    return dp[i][last][secondlast][tight] = ans;


}

int getAns(string s)
{
    int ans = 1;

    int l = s[0] - '0';

    for(int i=1;i<=l;i++)
    {
        ans = ans + solve(s,1,i,i,i == l);
    }

    for(int i=2;i<s.size();i++)
    {
        for(int j=1;j<=9;j++)
        {
            ans += solve(s,i,j,j,0);
        }

    }
    return ans;
}
signed main()
{
    

    int t;
    cin >> t;
    while(t--)
    {
        int l,r;
        cin >> l >> r;

        memset(dp,-1,sizeof dp);
        
        int x = getAns(to_string(l-1));

        memset(dp,-1,sizeof dp);

        int y = getAns(to_string(r));

       // cout << x << ' ' << y << '\n';

        cout << y - x << '\n';



    }
}

Compilation message

numbers.cpp: In function 'long long int solve(std::string, long long int, long long int, long long int, long long int)':
numbers.cpp:11:10: 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]
   11 |     if(i == s.length())
      |        ~~^~~~~~~~~~~~~
numbers.cpp: In function 'long long int getAns(std::string)':
numbers.cpp:46:18: 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]
   46 |     for(int i=2;i<s.size();i++)
      |                 ~^~~~~~~~~

Subtask #1
0 / 25.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 204 KB Output isn't correct
2 Incorrect 0 ms 204 KB Output isn't correct
3 Execution timed out 1082 ms 596 KB Time limit exceeded
4 Incorrect 1 ms 260 KB Output isn't correct
5 Incorrect 0 ms 204 KB Output isn't correct
6 Incorrect 0 ms 332 KB Output isn't correct
7 Incorrect 0 ms 204 KB Output isn't correct
8 Incorrect 0 ms 204 KB Output isn't correct
9 Incorrect 0 ms 204 KB Output isn't correct
10 Incorrect 3 ms 204 KB Output isn't correct
11 Incorrect 357 ms 328 KB Output isn't correct
12 Incorrect 352 ms 576 KB Output isn't correct
13 Incorrect 1 ms 204 KB Output isn't correct
14 Incorrect 0 ms 204 KB Output isn't correct
15 Incorrect 0 ms 204 KB Output isn't correct
16 Execution timed out 1090 ms 540 KB Time limit exceeded
17 Execution timed out 1090 ms 456 KB Time limit exceeded
18 Incorrect 0 ms 204 KB Output isn't correct
19 Execution timed out 1089 ms 448 KB Time limit exceeded
20 Incorrect 2 ms 204 KB Output isn't correct

Subtask #2
0 / 75.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1086 ms 444 KB Time limit exceeded
2 Execution timed out 1094 ms 316 KB Time limit exceeded
3 Execution timed out 1087 ms 448 KB Time limit exceeded
4 Execution timed out 1090 ms 328 KB Time limit exceeded
5 Execution timed out 1067 ms 484 KB Time limit exceeded
6 Execution timed out 1086 ms 520 KB Time limit exceeded
7 Incorrect 888 ms 544 KB Output isn't correct
8 Execution timed out 1054 ms 580 KB Time limit exceeded
9 Incorrect 10 ms 204 KB Output isn't correct
10 Incorrect 534 ms 324 KB Output isn't correct
11 Execution timed out 1046 ms 532 KB Time limit exceeded
12 Execution timed out 1088 ms 496 KB Time limit exceeded
13 Execution timed out 1090 ms 528 KB Time limit exceeded
14 Execution timed out 1036 ms 720 KB Time limit exceeded
15 Incorrect 168 ms 324 KB Output isn't correct
16 Execution timed out 1097 ms 432 KB Time limit exceeded
17 Execution timed out 1097 ms 344 KB Time limit exceeded
18 Execution timed out 1093 ms 452 KB Time limit exceeded
19 Execution timed out 1095 ms 452 KB Time limit exceeded
20 Execution timed out 1087 ms 452 KB Time limit exceeded
21 Execution timed out 1097 ms 472 KB Time limit exceeded
22 Execution timed out 1093 ms 584 KB Time limit exceeded
23 Execution timed out 1093 ms 468 KB Time limit exceeded
24 Execution timed out 1093 ms 452 KB Time limit exceeded
25 Execution timed out 1092 ms 336 KB Time limit exceeded
26 Execution timed out 1097 ms 452 KB Time limit exceeded
27 Execution timed out 1080 ms 580 KB Time limit exceeded
28 Execution timed out 1097 ms 572 KB Time limit exceeded
29 Execution timed out 1094 ms 444 KB Time limit exceeded
30 Execution timed out 1086 ms 456 KB Time limit exceeded
31 Execution timed out 1096 ms 436 KB Time limit exceeded
32 Execution timed out 1091 ms 460 KB Time limit exceeded
33 Execution timed out 1093 ms 572 KB Time limit exceeded
34 Execution timed out 1091 ms 564 KB Time limit exceeded
35 Execution timed out 1087 ms 352 KB Time limit exceeded
36 Execution timed out 1086 ms 356 KB Time limit exceeded
37 Execution timed out 1087 ms 468 KB Time limit exceeded
38 Execution timed out 1092 ms 444 KB Time limit exceeded
39 Execution timed out 1089 ms 320 KB Time limit exceeded
40 Execution timed out 1091 ms 328 KB Time limit exceeded
41 Execution timed out 1086 ms 440 KB Time limit exceeded
42 Execution timed out 1095 ms 572 KB Time limit exceeded
43 Execution timed out 1081 ms 476 KB Time limit exceeded
44 Execution timed out 1091 ms 588 KB Time limit exceeded
45 Execution timed out 1089 ms 348 KB Time limit exceeded