#pragma GCC optimize("Ofast")
#pragma GCC optimize("unroll-loops")
#include <bits/stdc++.h>
using namespace std;
#define int long long
typedef long double ld;
typedef vector<int> vi;
typedef vector<vi> vvi;
typedef stack<int> si;
typedef queue<int> qi;
typedef deque<int> di;
typedef pair<int, int> pii;
typedef vector<pii> vpii;
#define endl '\n'
#define pb push_back
#define FOR(i,g,b) for(int i = g; i <= b; i++)
#define BACK(i,g,b) for(int i = g; i >= b; i--)
#define fastIO ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
#define fi first
#define se second
#define gcd __gcd
#define setmin(x,y) x=min((x),(y))
#define setmax(x,y) x=max((x),(y))
const int MAXN=(1e6)+5;
const int inf=1e18;
const int MOD=1e9+7;
int dp[20][11][11][2][2],a,b;
vi dig;
int bt(int idx,int p1,int p2,bool k1,bool k2)
{
if(idx==dig.size()) return 1;
if(~dp[idx][p1][p2][k1][k2]) return dp[idx][p1][p2][k1][k2];
int res=0;
FOR(i,0,(k1?9:dig[idx])) if(i!=p1&&i!=p2) res+=bt(idx+1,p2,(!i&&!k2?10:i),k1|(i<dig[idx]),k2|(i>0));
return dp[idx][p1][p1][k1][k2]=res;
}
int solve(int x)
{
memset(dp,-1,sizeof dp);
dig.clear();
while(x) {dig.pb(x%10); x/=10;}
reverse(dig.begin(),dig.end());
return bt(0,10,10,0,0);
}
signed main()
{
fastIO
// freopen("in.txt","r",stdin);
// freopen("out.txt","w",stdout);
cin>>a>>b;
cout<<solve(b)-solve(a-1);
}
Compilation message
numbers.cpp: In function 'long long int bt(long long int, long long int, long long int, bool, bool)':
numbers.cpp:37:8: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
37 | if(idx==dig.size()) return 1;
| ~~~^~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
340 KB |
Output is correct |
| 2 |
Correct |
1 ms |
340 KB |
Output is correct |
| 3 |
Execution timed out |
1085 ms |
340 KB |
Time limit exceeded |
| 4 |
Correct |
1 ms |
340 KB |
Output is correct |
| 5 |
Correct |
1 ms |
340 KB |
Output is correct |
| 6 |
Correct |
1 ms |
340 KB |
Output is correct |
| 7 |
Correct |
0 ms |
340 KB |
Output is correct |
| 8 |
Correct |
1 ms |
340 KB |
Output is correct |
| 9 |
Correct |
0 ms |
340 KB |
Output is correct |
| 10 |
Correct |
1 ms |
320 KB |
Output is correct |
| 11 |
Correct |
1 ms |
340 KB |
Output is correct |
| 12 |
Correct |
1 ms |
340 KB |
Output is correct |
| 13 |
Correct |
1 ms |
340 KB |
Output is correct |
| 14 |
Correct |
1 ms |
340 KB |
Output is correct |
| 15 |
Correct |
1 ms |
340 KB |
Output is correct |
| 16 |
Correct |
4 ms |
340 KB |
Output is correct |
| 17 |
Correct |
3 ms |
324 KB |
Output is correct |
| 18 |
Correct |
1 ms |
340 KB |
Output is correct |
| 19 |
Execution timed out |
1084 ms |
340 KB |
Time limit exceeded |
| 20 |
Correct |
1 ms |
340 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
285 ms |
372 KB |
Output is correct |
| 2 |
Execution timed out |
1085 ms |
324 KB |
Time limit exceeded |
| 3 |
Execution timed out |
1074 ms |
340 KB |
Time limit exceeded |
| 4 |
Execution timed out |
1082 ms |
340 KB |
Time limit exceeded |
| 5 |
Correct |
101 ms |
340 KB |
Output is correct |
| 6 |
Correct |
370 ms |
372 KB |
Output is correct |
| 7 |
Correct |
6 ms |
340 KB |
Output is correct |
| 8 |
Correct |
5 ms |
340 KB |
Output is correct |
| 9 |
Correct |
9 ms |
384 KB |
Output is correct |
| 10 |
Correct |
10 ms |
392 KB |
Output is correct |
| 11 |
Correct |
287 ms |
372 KB |
Output is correct |
| 12 |
Correct |
58 ms |
372 KB |
Output is correct |
| 13 |
Correct |
16 ms |
400 KB |
Output is correct |
| 14 |
Correct |
103 ms |
340 KB |
Output is correct |
| 15 |
Correct |
119 ms |
388 KB |
Output is correct |
| 16 |
Execution timed out |
1078 ms |
328 KB |
Time limit exceeded |
| 17 |
Execution timed out |
1082 ms |
340 KB |
Time limit exceeded |
| 18 |
Execution timed out |
1074 ms |
340 KB |
Time limit exceeded |
| 19 |
Execution timed out |
1078 ms |
340 KB |
Time limit exceeded |
| 20 |
Execution timed out |
1080 ms |
340 KB |
Time limit exceeded |
| 21 |
Execution timed out |
1084 ms |
320 KB |
Time limit exceeded |
| 22 |
Execution timed out |
1083 ms |
340 KB |
Time limit exceeded |
| 23 |
Execution timed out |
1076 ms |
340 KB |
Time limit exceeded |
| 24 |
Execution timed out |
1082 ms |
340 KB |
Time limit exceeded |
| 25 |
Execution timed out |
1075 ms |
340 KB |
Time limit exceeded |
| 26 |
Execution timed out |
1075 ms |
340 KB |
Time limit exceeded |
| 27 |
Execution timed out |
1081 ms |
340 KB |
Time limit exceeded |
| 28 |
Execution timed out |
1072 ms |
340 KB |
Time limit exceeded |
| 29 |
Execution timed out |
1087 ms |
340 KB |
Time limit exceeded |
| 30 |
Execution timed out |
1071 ms |
340 KB |
Time limit exceeded |
| 31 |
Execution timed out |
1077 ms |
324 KB |
Time limit exceeded |
| 32 |
Execution timed out |
1083 ms |
340 KB |
Time limit exceeded |
| 33 |
Execution timed out |
1074 ms |
340 KB |
Time limit exceeded |
| 34 |
Execution timed out |
1086 ms |
328 KB |
Time limit exceeded |
| 35 |
Execution timed out |
1078 ms |
340 KB |
Time limit exceeded |
| 36 |
Execution timed out |
1082 ms |
340 KB |
Time limit exceeded |
| 37 |
Execution timed out |
1087 ms |
340 KB |
Time limit exceeded |
| 38 |
Execution timed out |
1085 ms |
340 KB |
Time limit exceeded |
| 39 |
Execution timed out |
1066 ms |
340 KB |
Time limit exceeded |
| 40 |
Execution timed out |
1078 ms |
320 KB |
Time limit exceeded |
| 41 |
Execution timed out |
1073 ms |
340 KB |
Time limit exceeded |
| 42 |
Execution timed out |
1074 ms |
340 KB |
Time limit exceeded |
| 43 |
Execution timed out |
1080 ms |
340 KB |
Time limit exceeded |
| 44 |
Execution timed out |
1084 ms |
340 KB |
Time limit exceeded |
| 45 |
Execution timed out |
1076 ms |
340 KB |
Time limit exceeded |
