#include <bits/stdc++.h>
using namespace std;
#define ld long double
#define ll long long
#define db double
#define ii pair<int,int>
#define f first
#define s second
#define mp make_pair
#define mt make_tuple
#define pb push_back
#define all(v) v.begin(),v.end()
#define BIT(i) ((ll)1<<(i))
#define debug(x) for (auto p: x) cout<<p<<' ';cout<<endl
#define forw(i,j,z) for(int i=(int)j;i<=(int)z;i++)
#define ford(i,j,z) for (int i=(int)j;i>=(int)z;i--)
#define sz(a) (int)a.size()
#define len(a) (int)a.length()
const int mod = 998244353;
inline int add(int u,int v){u+=v;if(u>=mod)u-=mod;return u;}
//auto seed = chrono::high_resolution_clock::now().time_since_epoch().count();
//mt19937 RAND(seed);
inline int dec(int u,int v){u-=v;if(u<0)u+=mod;return u;}
inline int mul(int u,int v){return (ll)u*v%mod;}
vector<int> digit;
bool ready[19][2][11][11][2];
ll dp[19][2][11][11][2];
ll f(int i = 0, bool strict = 1, int t1 = -1, int t2 = -1, bool dx = 0)
{
if (i == sz(digit))
{
if (dx) return 1;
return 0;
}
if (!strict)
{
if (ready[i][strict][t1 + 1][t2 + 1][dx])
return dp[i][strict][t1 + 1][t2 + 1][dx];
ready[i][strict][t1 + 1][t2 + 1][dx] = 1;
}
int E = strict ? digit[i] : 9;
ll ansf = 0;
forw(u, 0, E)
{
int nxt = u;
bool ndx = dx, nstrict = strict;
if (nxt == t1 || nxt == t2)
ndx = 1;
if (nxt == 0 && t2 == -1)
nxt = -1;
if (nstrict && nxt < E)
nstrict = 0;
ansf += f(i + 1, nstrict, t2, nxt, ndx);
}
if (!strict)
dp[i][strict][t1 + 1][t2 + 1][dx] = ansf;
return ansf;
}
ll getr(ll u)
{
digit.clear();
if (u == 0) return 0;
while(u)
{
digit.pb(u % 10);
u /= 10;
}
reverse(all(digit));
return f();
}
void solve()
{
ll a, b;
cin >> a >> b;
ll range = getr(b) - getr(a - 1);
cout << b - a + 1 - range;
}
signed main()
{
ios_base::sync_with_stdio(false);
cin.tie(0);
// freopen("test.inp","r",stdin);
// freopen("test.out","w",stdout);
//time_t TIME_TU=clock();
int t=1;
// cin>>t;
while(t--)
solve();
//time_t TIME_TV=clock();
//cerr<<(db)(TIME_TV-TIME_TU)/CLOCKS_PER_SEC<<endl;
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
348 KB |
Output is correct |
| 2 |
Correct |
1 ms |
348 KB |
Output is correct |
| 3 |
Correct |
1 ms |
464 KB |
Output is correct |
| 4 |
Correct |
0 ms |
348 KB |
Output is correct |
| 5 |
Correct |
0 ms |
348 KB |
Output is correct |
| 6 |
Correct |
1 ms |
464 KB |
Output is correct |
| 7 |
Correct |
0 ms |
348 KB |
Output is correct |
| 8 |
Correct |
0 ms |
348 KB |
Output is correct |
| 9 |
Correct |
0 ms |
348 KB |
Output is correct |
| 10 |
Correct |
1 ms |
348 KB |
Output is correct |
| 11 |
Correct |
0 ms |
348 KB |
Output is correct |
| 12 |
Correct |
0 ms |
348 KB |
Output is correct |
| 13 |
Correct |
1 ms |
348 KB |
Output is correct |
| 14 |
Correct |
1 ms |
348 KB |
Output is correct |
| 15 |
Correct |
0 ms |
348 KB |
Output is correct |
| 16 |
Correct |
1 ms |
348 KB |
Output is correct |
| 17 |
Correct |
1 ms |
348 KB |
Output is correct |
| 18 |
Correct |
1 ms |
348 KB |
Output is correct |
| 19 |
Correct |
1 ms |
348 KB |
Output is correct |
| 20 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
348 KB |
Output is correct |
| 2 |
Correct |
0 ms |
348 KB |
Output is correct |
| 3 |
Correct |
1 ms |
348 KB |
Output is correct |
| 4 |
Correct |
1 ms |
348 KB |
Output is correct |
| 5 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 6 |
Correct |
1 ms |
348 KB |
Output is correct |
| 7 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
| 8 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 9 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
| 10 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
| 11 |
Correct |
1 ms |
348 KB |
Output is correct |
| 12 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
| 13 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
| 14 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
| 15 |
Incorrect |
0 ms |
460 KB |
Output isn't correct |
| 16 |
Correct |
2 ms |
348 KB |
Output is correct |
| 17 |
Correct |
1 ms |
348 KB |
Output is correct |
| 18 |
Correct |
1 ms |
348 KB |
Output is correct |
| 19 |
Correct |
1 ms |
512 KB |
Output is correct |
| 20 |
Correct |
1 ms |
348 KB |
Output is correct |
| 21 |
Correct |
1 ms |
348 KB |
Output is correct |
| 22 |
Correct |
1 ms |
348 KB |
Output is correct |
| 23 |
Correct |
1 ms |
348 KB |
Output is correct |
| 24 |
Correct |
1 ms |
348 KB |
Output is correct |
| 25 |
Correct |
1 ms |
348 KB |
Output is correct |
| 26 |
Correct |
1 ms |
348 KB |
Output is correct |
| 27 |
Correct |
1 ms |
348 KB |
Output is correct |
| 28 |
Correct |
1 ms |
348 KB |
Output is correct |
| 29 |
Correct |
1 ms |
348 KB |
Output is correct |
| 30 |
Correct |
0 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 |
1 ms |
604 KB |
Output is correct |
| 36 |
Correct |
1 ms |
348 KB |
Output is correct |
| 37 |
Correct |
1 ms |
348 KB |
Output is correct |
| 38 |
Correct |
1 ms |
348 KB |
Output is correct |
| 39 |
Correct |
1 ms |
348 KB |
Output is correct |
| 40 |
Correct |
1 ms |
348 KB |
Output is correct |
| 41 |
Correct |
0 ms |
348 KB |
Output is correct |
| 42 |
Correct |
1 ms |
348 KB |
Output is correct |
| 43 |
Correct |
1 ms |
348 KB |
Output is correct |
| 44 |
Correct |
1 ms |
348 KB |
Output is correct |
| 45 |
Correct |
1 ms |
456 KB |
Output is correct |
