/*
* The way if it's all predetermined
* And the way i should go all my life
* I swear to go wherever will be
* 'Cause there'll be something to see and to find
*/
#include "bits/stdc++.h"
#define ll long long
using namespace std;
#define check(...) __f(#__VA_ARGS__, __VA_ARGS__)
template <typename val1>
void __f(const char* name, val1&& value) {
cout << name << " = " << value << endl;
}
template <typename val1, typename... values>
void __f( const char* names, val1&& value, values&&... multiplevalue)
{
const char* comma = strchr( names + 1, ','); cout.write(names, comma - names) << " = " << value << " "; __f(comma + 1, multiplevalue...);
}
ll a , b;
vector <int> digits;
ll dp[22][11][11][2][2];
ll memo(ll i,ll l,ll sl,ll st,ll sm){
if(i==digits.size())
return 1;
ll &ans = dp[i][l][sl][st][sm];
if(ans != -1)
return ans;
ans = 0;
if(st==0){
ans += memo(i+1,l,sl,st,1);
if(sm){
for(int j = 1;j<=9;j++){
ans += memo(i+1,j,l,1,1);
}
} else {
for(ll j = 1;j<digits[i];j++){
ans += memo(i+1,j,l,1,1);
}
ans += memo(i+1,digits[i],l,1,0);
}
} else {
if(sm){
for(int j = 0;j<=9;j++){
if(j==l or j==sl)
continue;
ans += memo(i+1,j,l,1,1);
}
} else {
for(ll j = 0;j<digits[i];j++){
if(j==l or j==sl)
continue;
ans += memo(i+1,j,l,1,1);
}
if(digits[i]!=l and digits[i]!=sl)
ans += memo(i+1,digits[i],l,1,0);
}
}
return ans;
}
int main(){
ios_base::sync_with_stdio(false);
cin.tie(NULL);
cin >> a >> b;
while(b){
digits.push_back(b%10);
b = b/10;
}
auto init = [&](){
for(int i = 0;i<=20;i++){
for(int j = 0;j<=10;j++){
for(int k = 0;k<=10;k++){
for(int l = 0;l<2;l++){
dp[i][j][k][l][0] = dp[i][j][k][l][1] = -1;
}
}
}
}
};
reverse(digits.begin() , digits.end());
init();
ll ans = memo(0 , 10 , 10 , 0 , 0);
a--;
if(a > -1){
init();
digits.clear();
while(a){
digits.push_back(a%10);
a /= 10;
}
reverse(digits.begin() , digits.end());
ll ans2 = memo(0,10,10,0,0);
ans -= ans2;
}
cout << ans;
cerr << "time taken : " << (float)clock() / CLOCKS_PER_SEC << " secs" << "\n";
return 0;
}
Compilation message
numbers.cpp: In function 'long long int memo(long long int, long long int, long long int, long long int, long long int)':
numbers.cpp:24:7: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
24 | if(i==digits.size())
| ~^~~~~~~~~~~~~~~
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
332 KB |
Output is correct |
2 |
Correct |
1 ms |
332 KB |
Output is correct |
3 |
Correct |
1 ms |
332 KB |
Output is correct |
4 |
Correct |
1 ms |
332 KB |
Output is correct |
5 |
Correct |
1 ms |
332 KB |
Output is correct |
6 |
Correct |
1 ms |
332 KB |
Output is correct |
7 |
Correct |
1 ms |
332 KB |
Output is correct |
8 |
Correct |
1 ms |
332 KB |
Output is correct |
9 |
Correct |
1 ms |
332 KB |
Output is correct |
10 |
Correct |
1 ms |
332 KB |
Output is correct |
11 |
Correct |
1 ms |
332 KB |
Output is correct |
12 |
Correct |
1 ms |
332 KB |
Output is correct |
13 |
Correct |
1 ms |
332 KB |
Output is correct |
14 |
Correct |
1 ms |
332 KB |
Output is correct |
15 |
Correct |
1 ms |
316 KB |
Output is correct |
16 |
Correct |
1 ms |
332 KB |
Output is correct |
17 |
Correct |
1 ms |
332 KB |
Output is correct |
18 |
Correct |
1 ms |
332 KB |
Output is correct |
19 |
Correct |
1 ms |
332 KB |
Output is correct |
20 |
Correct |
1 ms |
332 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
332 KB |
Output is correct |
2 |
Correct |
1 ms |
332 KB |
Output is correct |
3 |
Correct |
1 ms |
332 KB |
Output is correct |
4 |
Correct |
1 ms |
332 KB |
Output is correct |
5 |
Correct |
1 ms |
332 KB |
Output is correct |
6 |
Correct |
1 ms |
332 KB |
Output is correct |
7 |
Correct |
1 ms |
332 KB |
Output is correct |
8 |
Correct |
1 ms |
332 KB |
Output is correct |
9 |
Correct |
1 ms |
332 KB |
Output is correct |
10 |
Correct |
1 ms |
332 KB |
Output is correct |
11 |
Correct |
1 ms |
380 KB |
Output is correct |
12 |
Correct |
1 ms |
332 KB |
Output is correct |
13 |
Correct |
1 ms |
332 KB |
Output is correct |
14 |
Correct |
1 ms |
332 KB |
Output is correct |
15 |
Correct |
1 ms |
332 KB |
Output is correct |
16 |
Correct |
1 ms |
332 KB |
Output is correct |
17 |
Correct |
1 ms |
332 KB |
Output is correct |
18 |
Correct |
1 ms |
332 KB |
Output is correct |
19 |
Correct |
1 ms |
332 KB |
Output is correct |
20 |
Correct |
1 ms |
332 KB |
Output is correct |
21 |
Correct |
1 ms |
332 KB |
Output is correct |
22 |
Correct |
1 ms |
332 KB |
Output is correct |
23 |
Correct |
1 ms |
332 KB |
Output is correct |
24 |
Correct |
1 ms |
332 KB |
Output is correct |
25 |
Correct |
1 ms |
332 KB |
Output is correct |
26 |
Correct |
1 ms |
332 KB |
Output is correct |
27 |
Correct |
1 ms |
332 KB |
Output is correct |
28 |
Correct |
1 ms |
320 KB |
Output is correct |
29 |
Correct |
1 ms |
332 KB |
Output is correct |
30 |
Correct |
1 ms |
332 KB |
Output is correct |
31 |
Correct |
1 ms |
332 KB |
Output is correct |
32 |
Correct |
1 ms |
332 KB |
Output is correct |
33 |
Correct |
1 ms |
316 KB |
Output is correct |
34 |
Correct |
1 ms |
332 KB |
Output is correct |
35 |
Correct |
1 ms |
332 KB |
Output is correct |
36 |
Correct |
1 ms |
332 KB |
Output is correct |
37 |
Correct |
1 ms |
332 KB |
Output is correct |
38 |
Correct |
1 ms |
332 KB |
Output is correct |
39 |
Correct |
1 ms |
332 KB |
Output is correct |
40 |
Correct |
1 ms |
332 KB |
Output is correct |
41 |
Correct |
1 ms |
332 KB |
Output is correct |
42 |
Correct |
1 ms |
332 KB |
Output is correct |
43 |
Correct |
1 ms |
332 KB |
Output is correct |
44 |
Correct |
1 ms |
332 KB |
Output is correct |
45 |
Correct |
1 ms |
332 KB |
Output is correct |