//#pragma GCC optimize("conserve-stack,no-stack-protector")
#pragma GCC optimize("O3,unroll-loops")
//#pragma GCC target("avx2,popcnt,lzcnt,abm,bmi,bmi2,fma,tune=native")
#include<bits/stdc++.h>
#define pii pair<int, int>
#define fi first
#define se second
#define pb push_back
//#define int long long
//#define mod 998244353
using namespace std;
using ll=long long;
const int MN=1025;
int dp[20][11][11][2][2];
string t;
//const int inf = 1e18;
int DP(int pos, int lst1, int lst2, bool eq, bool start) {
if(pos==t.size()) return 1;
if(dp[pos][lst1+1][lst2+1][eq][start]!=-1) return dp[pos][lst1+1][lst2+1][eq][start];
int ans=0;
if(!start) {
ans+=DP(pos+1,-1,-1,false,false);
if(eq) {
int limit=t[pos]-'0';
for (int i=1; i<=limit; i++) {
ans+=DP(pos+1,i,-1,(i==limit),true);
}
}
else {
for (int i=1; i<=9; i++) {
ans+=DP(pos+1,i,-1,false,true);
}
}
}
else {
if(eq) {
int limit=t[pos]-'0';
for (int i=0; i<=limit; i++) {
if(i==lst1||i==lst2) continue;
ans+=DP(pos+1,i,lst1,(i==limit), true);
}
}
else {
for (int i=0; i<=9; i++) {
if(i==lst1||i==lst2) continue;
ans+=DP(pos+1,i,lst1,false,true);
}
}
}
return dp[pos][lst1+1][lst2+1][eq][start]=ans;
}
int dp_digit(int x) {
if(x<0) return 0;
t=to_string(x);
memset(dp,-1,sizeof(dp));
return DP(0,-1,-1,1,0);
}
inline void solve() {
int l,r;
cin>>l>>r;
cout<<dp_digit(r)-dp_digit(l-1);
}
signed main() {
ios_base::sync_with_stdio(0);
cin.tie(0);
int t=1;
// cin>>t;
while(t--) {
solve();
}
}
Compilation message
numbers.cpp: In function 'int DP(int, int, int, bool, bool)':
numbers.cpp:18:8: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
18 | if(pos==t.size()) return 1;
| ~~~^~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
340 KB |
Output is correct |
| 2 |
Correct |
0 ms |
340 KB |
Output is correct |
| 3 |
Incorrect |
0 ms |
340 KB |
Output isn't correct |
| 4 |
Correct |
0 ms |
340 KB |
Output is correct |
| 5 |
Correct |
1 ms |
340 KB |
Output is correct |
| 6 |
Correct |
0 ms |
340 KB |
Output is correct |
| 7 |
Correct |
0 ms |
340 KB |
Output is correct |
| 8 |
Correct |
0 ms |
340 KB |
Output is correct |
| 9 |
Correct |
0 ms |
340 KB |
Output is correct |
| 10 |
Correct |
0 ms |
340 KB |
Output is correct |
| 11 |
Correct |
0 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 |
0 ms |
340 KB |
Output is correct |
| 16 |
Correct |
0 ms |
340 KB |
Output is correct |
| 17 |
Correct |
0 ms |
340 KB |
Output is correct |
| 18 |
Correct |
1 ms |
340 KB |
Output is correct |
| 19 |
Incorrect |
0 ms |
340 KB |
Output isn't correct |
| 20 |
Correct |
0 ms |
340 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
340 KB |
Output is correct |
| 2 |
Incorrect |
0 ms |
340 KB |
Output isn't correct |
| 3 |
Incorrect |
0 ms |
340 KB |
Output isn't correct |
| 4 |
Incorrect |
0 ms |
340 KB |
Output isn't 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 |
0 ms |
340 KB |
Output is correct |
| 9 |
Correct |
0 ms |
340 KB |
Output is correct |
| 10 |
Correct |
0 ms |
340 KB |
Output is correct |
| 11 |
Correct |
1 ms |
340 KB |
Output is correct |
| 12 |
Correct |
0 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 |
Incorrect |
0 ms |
340 KB |
Output isn't correct |
| 17 |
Incorrect |
0 ms |
340 KB |
Output isn't correct |
| 18 |
Incorrect |
1 ms |
340 KB |
Output isn't correct |
| 19 |
Incorrect |
0 ms |
340 KB |
Output isn't correct |
| 20 |
Incorrect |
0 ms |
340 KB |
Output isn't correct |
| 21 |
Incorrect |
1 ms |
340 KB |
Output isn't correct |
| 22 |
Incorrect |
0 ms |
340 KB |
Output isn't correct |
| 23 |
Incorrect |
1 ms |
340 KB |
Output isn't correct |
| 24 |
Incorrect |
1 ms |
340 KB |
Output isn't correct |
| 25 |
Incorrect |
1 ms |
340 KB |
Output isn't correct |
| 26 |
Incorrect |
1 ms |
340 KB |
Output isn't correct |
| 27 |
Incorrect |
0 ms |
340 KB |
Output isn't correct |
| 28 |
Incorrect |
0 ms |
340 KB |
Output isn't correct |
| 29 |
Incorrect |
0 ms |
340 KB |
Output isn't correct |
| 30 |
Incorrect |
0 ms |
340 KB |
Output isn't correct |
| 31 |
Incorrect |
0 ms |
340 KB |
Output isn't correct |
| 32 |
Incorrect |
0 ms |
340 KB |
Output isn't correct |
| 33 |
Incorrect |
0 ms |
340 KB |
Output isn't correct |
| 34 |
Incorrect |
0 ms |
340 KB |
Output isn't correct |
| 35 |
Incorrect |
1 ms |
340 KB |
Output isn't correct |
| 36 |
Incorrect |
0 ms |
340 KB |
Output isn't correct |
| 37 |
Incorrect |
0 ms |
340 KB |
Output isn't correct |
| 38 |
Incorrect |
0 ms |
340 KB |
Output isn't correct |
| 39 |
Incorrect |
0 ms |
340 KB |
Output isn't correct |
| 40 |
Incorrect |
0 ms |
340 KB |
Output isn't correct |
| 41 |
Incorrect |
0 ms |
340 KB |
Output isn't correct |
| 42 |
Incorrect |
0 ms |
340 KB |
Output isn't correct |
| 43 |
Incorrect |
0 ms |
284 KB |
Output isn't correct |
| 44 |
Incorrect |
0 ms |
340 KB |
Output isn't correct |
| 45 |
Incorrect |
1 ms |
340 KB |
Output isn't correct |
