#include <bits/stdc++.h>
using namespace std;
string a,b;
deque<int> q;
long long tmp,resa,resb;
long long solve(int len)
{
int fixed = 0;
bool fix = false;
for(int i = 0;i < q.size();i++)
{
if(i>0){ if(fix and q[i]==q[i-1]) return 0; }
if(i>1){ if(fix and q[i]==q[i-2]) return 0; }
if(!fix and q[i]) fix = true;
if(fix) fixed++;
}
int lenn = len;
len-=q.size();
long long ret = 1;
if(fixed==0)
{
for(int i = 0;i < len;i++)
{
if(i==0) ret*=9LL;
else if(i==1) ret*=9LL;
else ret*=8LL;
}
for(int i = 0;i < len-1;i++)
{
q.push_back(0);
for(int j = 1;j <= 9;j++) q.push_back(j),ret+=solve(lenn),q.pop_back();
}
if(len>0) ret++;
for(int i = 0;i < len-1;i++) q.pop_back();
}
else if(fixed==1) for(int i = 0;i < len;i++)
{
if(i==0) ret*=9LL;
else ret*=8LL;
}
else for(int i = 0;i < len;i++) ret*=8LL;
return ret;
}
int main()
{
ios_base::sync_with_stdio(0); cin.tie(0);
cin >> tmp >> b;
tmp--;
long long tm = tmp;
while(tmp) a = (char)('0'+(tmp%10LL))+a,tmp/=10LL;
if(tm>=0)
{
if(a.length()==0) a+='0';
for(char c : a)
{
int x = c-'0';
for(int i = 0;i < x;i++) q.push_back(i),resa+=solve(a.length()),q.pop_back();
q.push_back(x);
}
resa+=solve(a.length());
}
while(!q.empty()) q.pop_back();
for(char c : b)
{
int x = c-'0';
for(int i = 0;i < x;i++) q.push_back(i),resb+=solve(b.length()),q.pop_back();
q.push_back(x);
}
resb+=solve(b.length());
cout << resb-resa;
}
Compilation message
numbers.cpp: In function 'long long int solve(int)':
numbers.cpp:12:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int i = 0;i < q.size();i++)
~~^~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
5 ms |
384 KB |
Output is correct |
| 2 |
Correct |
4 ms |
384 KB |
Output is correct |
| 3 |
Correct |
5 ms |
384 KB |
Output is correct |
| 4 |
Correct |
5 ms |
384 KB |
Output is correct |
| 5 |
Correct |
5 ms |
384 KB |
Output is correct |
| 6 |
Correct |
4 ms |
384 KB |
Output is correct |
| 7 |
Correct |
4 ms |
384 KB |
Output is correct |
| 8 |
Correct |
5 ms |
384 KB |
Output is correct |
| 9 |
Correct |
4 ms |
384 KB |
Output is correct |
| 10 |
Correct |
5 ms |
384 KB |
Output is correct |
| 11 |
Correct |
5 ms |
384 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 |
4 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 |
5 ms |
384 KB |
Output is correct |
| 20 |
Correct |
5 ms |
384 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
4 ms |
384 KB |
Output is correct |
| 2 |
Correct |
5 ms |
384 KB |
Output is correct |
| 3 |
Correct |
5 ms |
384 KB |
Output is correct |
| 4 |
Correct |
5 ms |
384 KB |
Output is correct |
| 5 |
Correct |
5 ms |
384 KB |
Output is correct |
| 6 |
Correct |
5 ms |
384 KB |
Output is correct |
| 7 |
Correct |
5 ms |
384 KB |
Output is correct |
| 8 |
Correct |
5 ms |
384 KB |
Output is correct |
| 9 |
Correct |
5 ms |
384 KB |
Output is correct |
| 10 |
Correct |
5 ms |
384 KB |
Output is correct |
| 11 |
Correct |
4 ms |
384 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 |
360 KB |
Output is correct |
| 16 |
Correct |
5 ms |
384 KB |
Output is correct |
| 17 |
Correct |
5 ms |
384 KB |
Output is correct |
| 18 |
Correct |
5 ms |
384 KB |
Output is correct |
| 19 |
Correct |
5 ms |
384 KB |
Output is correct |
| 20 |
Correct |
5 ms |
384 KB |
Output is correct |
| 21 |
Correct |
5 ms |
384 KB |
Output is correct |
| 22 |
Correct |
5 ms |
384 KB |
Output is correct |
| 23 |
Correct |
5 ms |
384 KB |
Output is correct |
| 24 |
Correct |
5 ms |
384 KB |
Output is correct |
| 25 |
Correct |
5 ms |
384 KB |
Output is correct |
| 26 |
Correct |
5 ms |
384 KB |
Output is correct |
| 27 |
Correct |
5 ms |
384 KB |
Output is correct |
| 28 |
Correct |
5 ms |
384 KB |
Output is correct |
| 29 |
Correct |
5 ms |
384 KB |
Output is correct |
| 30 |
Correct |
5 ms |
384 KB |
Output is correct |
| 31 |
Correct |
5 ms |
384 KB |
Output is correct |
| 32 |
Correct |
6 ms |
384 KB |
Output is correct |
| 33 |
Correct |
5 ms |
384 KB |
Output is correct |
| 34 |
Correct |
5 ms |
384 KB |
Output is correct |
| 35 |
Correct |
5 ms |
384 KB |
Output is correct |
| 36 |
Correct |
5 ms |
384 KB |
Output is correct |
| 37 |
Correct |
5 ms |
384 KB |
Output is correct |
| 38 |
Correct |
5 ms |
384 KB |
Output is correct |
| 39 |
Correct |
5 ms |
384 KB |
Output is correct |
| 40 |
Correct |
5 ms |
384 KB |
Output is correct |
| 41 |
Correct |
5 ms |
384 KB |
Output is correct |
| 42 |
Correct |
5 ms |
384 KB |
Output is correct |
| 43 |
Correct |
5 ms |
384 KB |
Output is correct |
| 44 |
Correct |
5 ms |
384 KB |
Output is correct |
| 45 |
Correct |
4 ms |
384 KB |
Output is correct |
