oj.uz

Submission #342340

# Submission time Handle Problem Language Result Execution time Memory
342340 2021-01-01T22:57:11 Z jeroenodb Palindrome-Free Numbers (BOI13_numbers) C++14
100 / 100
 1 ms 384 KB 
#include <iostream>
#include <vector>
#include <bitset>
#include <cassert>
#include <algorithm>
#include <cstring>
using namespace std;
#define all(x) begin(x),end(x)
typedef long long ll;
const int mxN = 1e5+1;
ll dp[18][11][11][2];
vector<int> dig;
ll recur(int i=0, int p=10, int pp=10, bool free=false) {
    if(i==dig.size()) return 1;
    if(dp[i][p][pp][free]) {
        return dp[i][p][pp][free]-1;
    }
    dp[i][p][pp][free]++;
    int limit = free?9:dig[i];
    for(int d=0;d<=limit;++d) {
            if(d==p or d==pp) continue;
            int tmp = d;
            if(p==10 and d==0) {
                tmp=10;
            }
            dp[i][p][pp][free]+=recur(i+1,tmp,p,free or d!=dig[i]);
    }
    return dp[i][p][pp][free]-1;

}
ll solve(ll a) {
    if(a==-1) return 0;
    memset(&dp[0][0][0][0], 0,sizeof(dp));
    dig.clear();
    while(a!=0) {
        dig.push_back(a%10);
        a/=10;
    }
    reverse(all(dig));
    return recur();
}
int main() {
    ll a,b; cin >> a >> b;
    cout << solve(b) - solve(a-1) << endl;
}

Compilation message

numbers.cpp: In function 'll recur(int, int, int, bool)':
numbers.cpp:14:9: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   14 |     if(i==dig.size()) return 1;
      |        ~^~~~~~~~~~~~

Subtask #1
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 1 ms 364 KB Output is correct
17 Correct 1 ms 364 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 1 ms 364 KB Output is correct

Subtask #2
75.0 / 75.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 1 ms 364 KB Output is correct
17 Correct 1 ms 364 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 1 ms 364 KB Output is correct
21 Correct 1 ms 364 KB Output is correct
22 Correct 1 ms 364 KB Output is correct
23 Correct 1 ms 364 KB Output is correct
24 Correct 1 ms 364 KB Output is correct
25 Correct 1 ms 364 KB Output is correct
26 Correct 1 ms 364 KB Output is correct
27 Correct 1 ms 364 KB Output is correct
28 Correct 1 ms 364 KB Output is correct
29 Correct 1 ms 364 KB Output is correct
30 Correct 1 ms 364 KB Output is correct
31 Correct 1 ms 364 KB Output is correct
32 Correct 1 ms 364 KB Output is correct
33 Correct 1 ms 364 KB Output is correct
34 Correct 1 ms 364 KB Output is correct
35 Correct 1 ms 364 KB Output is correct
36 Correct 1 ms 364 KB Output is correct
37 Correct 1 ms 364 KB Output is correct
38 Correct 1 ms 364 KB Output is correct
39 Correct 1 ms 364 KB Output is correct
40 Correct 1 ms 364 KB Output is correct
41 Correct 1 ms 364 KB Output is correct
42 Correct 1 ms 364 KB Output is correct
43 Correct 1 ms 364 KB Output is correct
44 Correct 1 ms 364 KB Output is correct
45 Correct 1 ms 364 KB Output is correct