#include <bits/stdc++.h>
using namespace std;
long long dp[20][2][2][11][11];
string a, b;
long long solve (int pos, bool low, bool high, int last, int prevlast, bool nonzero) {
if (pos == a.length()) return 1;
long long &ans = dp[pos][low][high][last][prevlast];
if (ans != -1) return ans;
ans = 0;
int l = 0, r = 9;
if (low) l = a[pos] - '0';
if (high) r = b[pos] - '0';
for (int i = l; i <= r; i++) {
bool newlow = 0;
bool newhigh = 0;
if (low && i == l) newlow = 1;
if (high && i == r) newhigh = 1;
if (!nonzero) {
if (i == 0) ans += solve(pos + 1, newlow, newhigh, last, prevlast, nonzero);
else if (i != last && i != prevlast) ans += solve(pos + 1, newlow, newhigh, i, last, true);
}
else if (i != last && i != prevlast) ans += solve(pos + 1, newlow, newhigh, i, last, true);
}
return ans;
}
int main(){
ios::sync_with_stdio(false); cin.tie(0); cout.tie(0);
cin >> a >> b;
while (a.length() < b.length()) a = "0" + a;
while (b.length() < a.length()) b = "0" + b;
memset(dp, -1, sizeof(dp));
cout << solve(0, 1, 1, 10, 10, 0);
return 0;
}
Compilation message
numbers.cpp: In function 'long long int solve(int, bool, bool, int, int, bool)':
numbers.cpp:9:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
if (pos == a.length()) return 1;
~~~~^~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
376 KB |
Output is correct |
| 2 |
Correct |
2 ms |
500 KB |
Output is correct |
| 3 |
Correct |
2 ms |
580 KB |
Output is correct |
| 4 |
Correct |
2 ms |
580 KB |
Output is correct |
| 5 |
Correct |
2 ms |
580 KB |
Output is correct |
| 6 |
Correct |
2 ms |
608 KB |
Output is correct |
| 7 |
Correct |
2 ms |
608 KB |
Output is correct |
| 8 |
Correct |
2 ms |
608 KB |
Output is correct |
| 9 |
Correct |
2 ms |
688 KB |
Output is correct |
| 10 |
Correct |
2 ms |
748 KB |
Output is correct |
| 11 |
Correct |
2 ms |
748 KB |
Output is correct |
| 12 |
Correct |
3 ms |
748 KB |
Output is correct |
| 13 |
Correct |
2 ms |
748 KB |
Output is correct |
| 14 |
Correct |
2 ms |
748 KB |
Output is correct |
| 15 |
Correct |
2 ms |
748 KB |
Output is correct |
| 16 |
Correct |
2 ms |
748 KB |
Output is correct |
| 17 |
Correct |
2 ms |
748 KB |
Output is correct |
| 18 |
Correct |
2 ms |
748 KB |
Output is correct |
| 19 |
Correct |
2 ms |
748 KB |
Output is correct |
| 20 |
Correct |
2 ms |
748 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
748 KB |
Output is correct |
| 2 |
Correct |
2 ms |
748 KB |
Output is correct |
| 3 |
Correct |
2 ms |
748 KB |
Output is correct |
| 4 |
Correct |
2 ms |
748 KB |
Output is correct |
| 5 |
Correct |
2 ms |
796 KB |
Output is correct |
| 6 |
Correct |
2 ms |
796 KB |
Output is correct |
| 7 |
Correct |
2 ms |
796 KB |
Output is correct |
| 8 |
Correct |
2 ms |
796 KB |
Output is correct |
| 9 |
Correct |
2 ms |
796 KB |
Output is correct |
| 10 |
Correct |
2 ms |
796 KB |
Output is correct |
| 11 |
Correct |
2 ms |
796 KB |
Output is correct |
| 12 |
Correct |
2 ms |
796 KB |
Output is correct |
| 13 |
Correct |
2 ms |
796 KB |
Output is correct |
| 14 |
Correct |
2 ms |
796 KB |
Output is correct |
| 15 |
Correct |
2 ms |
796 KB |
Output is correct |
| 16 |
Correct |
2 ms |
796 KB |
Output is correct |
| 17 |
Correct |
2 ms |
796 KB |
Output is correct |
| 18 |
Correct |
2 ms |
796 KB |
Output is correct |
| 19 |
Correct |
2 ms |
796 KB |
Output is correct |
| 20 |
Correct |
2 ms |
796 KB |
Output is correct |
| 21 |
Correct |
2 ms |
796 KB |
Output is correct |
| 22 |
Correct |
2 ms |
796 KB |
Output is correct |
| 23 |
Correct |
2 ms |
796 KB |
Output is correct |
| 24 |
Correct |
2 ms |
796 KB |
Output is correct |
| 25 |
Correct |
2 ms |
796 KB |
Output is correct |
| 26 |
Correct |
2 ms |
796 KB |
Output is correct |
| 27 |
Correct |
2 ms |
796 KB |
Output is correct |
| 28 |
Correct |
2 ms |
796 KB |
Output is correct |
| 29 |
Correct |
2 ms |
796 KB |
Output is correct |
| 30 |
Correct |
2 ms |
796 KB |
Output is correct |
| 31 |
Correct |
2 ms |
796 KB |
Output is correct |
| 32 |
Correct |
2 ms |
796 KB |
Output is correct |
| 33 |
Correct |
2 ms |
796 KB |
Output is correct |
| 34 |
Correct |
2 ms |
796 KB |
Output is correct |
| 35 |
Correct |
2 ms |
796 KB |
Output is correct |
| 36 |
Correct |
2 ms |
796 KB |
Output is correct |
| 37 |
Correct |
3 ms |
796 KB |
Output is correct |
| 38 |
Correct |
2 ms |
796 KB |
Output is correct |
| 39 |
Correct |
2 ms |
796 KB |
Output is correct |
| 40 |
Correct |
2 ms |
796 KB |
Output is correct |
| 41 |
Correct |
2 ms |
796 KB |
Output is correct |
| 42 |
Correct |
2 ms |
796 KB |
Output is correct |
| 43 |
Correct |
2 ms |
796 KB |
Output is correct |
| 44 |
Correct |
2 ms |
796 KB |
Output is correct |
| 45 |
Correct |
2 ms |
796 KB |
Output is correct |
