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Submission #230433

# Submission time Handle Problem Language Result Execution time Memory
230433 2020-05-10T06:49:28 Z mehrdad_sohrabi Palindrome-Free Numbers (BOI13_numbers) C++14
100 / 100
 5 ms 512 KB 
#include <bits/stdc++.h>
typedef long long int ll;
typedef long double ld;
#define pb push_back
#define pii pair < ll , ll >
#define F first
#define S second
#define endl '\n'
#define int long long
#define sync ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0)
#pragma GCC optimize ("Ofast")
#pragma GCC optimize ("unroll-loops")
#define kill(x) return cout<<x<<'\n', 0;
using namespace std;
const int N=20,M=10;
bool check(vector <int> a){
    for (int i=1;i<a.size();i++){
        if (a[i]==a[i-1]) return 0;
    }
    for (int i=2;i<a.size();i++){
        if (a[i]==a[i-2]) return 0;
    }
    return 1;
}
ll dp[N];
ll p[N];
ll solve(ll x){
    if (x<10) return x+1;
    vector <int> a;
    ll k=x;
    while(k){
        a.pb(k%10);
        k/=10;
    }
    ll ans=0;
    ll z=a.size();
    reverse(a.begin(),a.end());
    vector <int> b;
    for (int i=0;i<a.size();i++){
        z--;

        for (int j=0;j<a[i];j++){
            if (i==0 && j==0) continue;
            b.pb(j);
            if (check(b)){
                if (i==0){
                    ans+=p[z]/8*9;
                   // cout << p[z]/8*9 << endl;;
                    b.pop_back();
                    continue;
                }
                ans+=p[z];
             //   cout << p[z] << endl;
            }
            b.pop_back();
        }
        b.pb(a[i]);
    }
    if (check(b)) ans++;
    ans+=dp[(ll)a.size()-1];
    return ans;

}
int32_t main(){
    p[0]=1;
    for (int i=1;i<N;i++){
        p[i]=p[i-1]*8;
    }
    dp[0]=1;
    dp[1]=10;
    for (int i=2;i<N;i++){
        dp[i]=dp[i-1]+9*9*p[i-2];
    }
    ll l,r;
    cin >> l >> r;
    ll ans=solve(r);
  //  cout << ans << endl;
    if (l!=0) ans-=solve(l-1);
    cout << ans << endl;
}

Compilation message

numbers.cpp: In function 'bool check(std::vector<long long int>)':
numbers.cpp:17:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i=1;i<a.size();i++){
                  ~^~~~~~~~~
numbers.cpp:20:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i=2;i<a.size();i++){
                  ~^~~~~~~~~
numbers.cpp: In function 'll solve(ll)':
numbers.cpp:39:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i=0;i<a.size();i++){
                  ~^~~~~~~~~

Subtask #1
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 256 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 5 ms 512 KB Output is correct
4 Correct 4 ms 256 KB Output is correct
5 Correct 4 ms 256 KB Output is correct
6 Correct 4 ms 256 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 4 ms 256 KB Output is correct
9 Correct 4 ms 256 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 4 ms 256 KB Output is correct
12 Correct 5 ms 384 KB Output is correct
13 Correct 5 ms 384 KB Output is correct
14 Correct 5 ms 384 KB Output is correct
15 Correct 5 ms 256 KB Output is correct
16 Correct 5 ms 384 KB Output is correct
17 Correct 4 ms 384 KB Output is correct
18 Correct 4 ms 384 KB Output is correct
19 Correct 4 ms 256 KB Output is correct
20 Correct 5 ms 384 KB Output is correct

Subtask #2
75.0 / 75.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 256 KB Output is correct
2 Correct 4 ms 256 KB Output is correct
3 Correct 5 ms 256 KB Output is correct
4 Correct 5 ms 256 KB Output is correct
5 Correct 4 ms 384 KB Output is correct
6 Correct 4 ms 256 KB Output is correct
7 Correct 4 ms 256 KB Output is correct
8 Correct 4 ms 256 KB Output is correct
9 Correct 4 ms 256 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 4 ms 256 KB Output is correct
12 Correct 5 ms 256 KB Output is correct
13 Correct 5 ms 384 KB Output is correct
14 Correct 4 ms 256 KB Output is correct
15 Correct 4 ms 256 KB Output is correct
16 Correct 5 ms 384 KB Output is correct
17 Correct 5 ms 256 KB Output is correct
18 Correct 5 ms 256 KB Output is correct
19 Correct 4 ms 256 KB Output is correct
20 Correct 5 ms 256 KB Output is correct
21 Correct 5 ms 308 KB Output is correct
22 Correct 4 ms 256 KB Output is correct
23 Correct 4 ms 256 KB Output is correct
24 Correct 5 ms 384 KB Output is correct
25 Correct 4 ms 256 KB Output is correct
26 Correct 5 ms 384 KB Output is correct
27 Correct 5 ms 256 KB Output is correct
28 Correct 5 ms 384 KB Output is correct
29 Correct 4 ms 256 KB Output is correct
30 Correct 4 ms 256 KB Output is correct
31 Correct 4 ms 256 KB Output is correct
32 Correct 5 ms 384 KB Output is correct
33 Correct 5 ms 384 KB Output is correct
34 Correct 5 ms 256 KB Output is correct
35 Correct 5 ms 256 KB Output is correct
36 Correct 4 ms 256 KB Output is correct
37 Correct 4 ms 256 KB Output is correct
38 Correct 5 ms 384 KB Output is correct
39 Correct 4 ms 256 KB Output is correct
40 Correct 4 ms 256 KB Output is correct
41 Correct 4 ms 256 KB Output is correct
42 Correct 4 ms 256 KB Output is correct
43 Correct 5 ms 384 KB Output is correct
44 Correct 5 ms 256 KB Output is correct
45 Correct 5 ms 256 KB Output is correct