oj.uz

Submission #1082826

# Submission time Handle Problem Language Result Execution time Memory
1082826 2024-09-01T16:46:44 Z lamlamlam Palindrome-Free Numbers (BOI13_numbers) C++17
72.5 / 100
 1 ms 600 KB 
#include <bits/stdc++.h>
using namespace std;
#define int long long
#define endl '\n'
int a,b,dp[20][2][11][11],n;
string s;
int f(int pos,int tight,int prev1,int prev2)
{
    if(pos==n) return 1;
    if(dp[pos][tight][prev1][prev2]!=-1) return dp[pos][tight][prev1][prev2];
    int res = 0, ub = 9;
    if(tight) ub = s[pos] - '0';
    for(int i=0; i<=ub; i++){
        if(i==prev1 or i==prev2) continue;
        int is_tight = (tight && i==ub);
        res += f(pos+1,is_tight,i,prev1);
    }
    return dp[pos][tight][prev1][prev2] = res;
}

int sol(int x)
{
    if(x<=9) return max(x,0ll);
    for(int i=0; i<20; i++) for(int j=0; j<11; j++) for(int k=0; k<11; k++) dp[i][0][j][k] = dp[i][1][j][k] = -1;
    s = to_string(x);
    n = s.size();
    return f(0,1,10,10);
}

signed main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    #define task "troll"
    if(fopen(task".inp","r")){
        freopen(task".inp","r",stdin);
        freopen(task".out","w",stdout);
    }
    cin >> a >> b;
    cout << sol(b) - sol(a-1);
    cerr << "\nTime: " << clock();
}

Compilation message

numbers.cpp: In function 'int main()':
numbers.cpp:36:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   36 |         freopen(task".inp","r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
numbers.cpp:37:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   37 |         freopen(task".out","w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
12.5 / 25.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 344 KB Output isn't correct
2 Incorrect 1 ms 348 KB Output isn't correct
3 Correct 0 ms 348 KB Output is correct
4 Incorrect 0 ms 348 KB Output isn't correct
5 Correct 0 ms 348 KB Output is correct
6 Incorrect 0 ms 348 KB Output isn't correct
7 Incorrect 0 ms 348 KB Output isn't correct
8 Incorrect 0 ms 348 KB Output isn't correct
9 Correct 0 ms 468 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 460 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 344 KB Output is correct
14 Incorrect 1 ms 348 KB Output isn't correct
15 Incorrect 0 ms 348 KB Output isn't correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Incorrect 0 ms 348 KB Output isn't correct
19 Correct 1 ms 344 KB Output is correct
20 Incorrect 0 ms 348 KB Output isn't correct

Subtask #2
60.0 / 75.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Incorrect 0 ms 348 KB Output isn't correct
6 Correct 0 ms 348 KB Output is correct
7 Incorrect 0 ms 348 KB Output isn't correct
8 Incorrect 0 ms 348 KB Output isn't correct
9 Incorrect 0 ms 348 KB Output isn't correct
10 Incorrect 0 ms 348 KB Output isn't correct
11 Correct 0 ms 348 KB Output is correct
12 Incorrect 0 ms 344 KB Output isn't correct
13 Incorrect 0 ms 344 KB Output isn't correct
14 Incorrect 0 ms 348 KB Output isn't correct
15 Incorrect 1 ms 348 KB Output isn't correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 344 KB Output is correct
21 Correct 1 ms 600 KB Output is correct
22 Correct 1 ms 344 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 1 ms 348 KB Output is correct
31 Correct 1 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 1 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 1 ms 348 KB Output is correct
37 Correct 0 ms 348 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 0 ms 344 KB Output is correct
40 Correct 0 ms 492 KB Output is correct
41 Correct 1 ms 348 KB Output is correct
42 Correct 1 ms 344 KB Output is correct
43 Correct 1 ms 344 KB Output is correct
44 Correct 1 ms 348 KB Output is correct
45 Correct 0 ms 348 KB Output is correct