#include <bits/stdc++.h>
using namespace std;
long long a, b, ans;
long long dp[20][15][15][2][2];
char A[20];
long long solve(int pos = 0, int a = 10, int b = 10, int f = 0, int st = 1) {
if(!A[pos]) return 1LL;
long long &ret = dp[pos][a][b][f][st];
if(~ret) return ret;
ret = 0;
int lim;
if(!f) lim = A[pos]-'0';
else lim = 9;
for(int i = 0; i <= lim; i++) {
if(i == a || i == b) continue;
if(!i && st) ret += solve(pos+1, 10, 10, 1, 1);
else ret += solve(pos+1, b, i, f|(i < lim), 0);
}
return ret;
}
int main() {
scanf("%lld %lld", &a, &b);
memset(dp, -1LL, sizeof dp);
sprintf(A, "%lld", b);
ans = solve();
if(a) {
memset(dp, -1LL, sizeof dp);
sprintf(A, "%lld", a-1);
ans -= solve();
}
printf("%lld\n", ans);
return 0;
}
Compilation message
numbers.cpp: In function 'int main()':
numbers.cpp:27:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%lld %lld", &a, &b);
~~~~~^~~~~~~~~~~~~~~~~~~~~
numbers.cpp:26:5: warning: '__builtin___sprintf_chk' may write a terminating nul past the end of the destination [-Wformat-overflow=]
int main() {
^~~~
In file included from /usr/include/stdio.h:936:0,
from /usr/include/c++/7/cstdio:42,
from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:46,
from numbers.cpp:1:
/usr/include/x86_64-linux-gnu/bits/stdio2.h:34:43: note: '__builtin___sprintf_chk' output between 2 and 21 bytes into a destination of size 20
__bos (__s), __fmt, __va_arg_pack ());
^
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
504 KB |
Output is correct |
| 2 |
Correct |
2 ms |
640 KB |
Output is correct |
| 3 |
Correct |
2 ms |
640 KB |
Output is correct |
| 4 |
Correct |
2 ms |
732 KB |
Output is correct |
| 5 |
Correct |
2 ms |
792 KB |
Output is correct |
| 6 |
Correct |
2 ms |
800 KB |
Output is correct |
| 7 |
Correct |
2 ms |
800 KB |
Output is correct |
| 8 |
Correct |
2 ms |
800 KB |
Output is correct |
| 9 |
Correct |
2 ms |
800 KB |
Output is correct |
| 10 |
Correct |
3 ms |
824 KB |
Output is correct |
| 11 |
Correct |
2 ms |
824 KB |
Output is correct |
| 12 |
Correct |
2 ms |
824 KB |
Output is correct |
| 13 |
Correct |
2 ms |
824 KB |
Output is correct |
| 14 |
Correct |
2 ms |
824 KB |
Output is correct |
| 15 |
Correct |
2 ms |
824 KB |
Output is correct |
| 16 |
Correct |
2 ms |
824 KB |
Output is correct |
| 17 |
Correct |
2 ms |
824 KB |
Output is correct |
| 18 |
Correct |
2 ms |
824 KB |
Output is correct |
| 19 |
Correct |
2 ms |
824 KB |
Output is correct |
| 20 |
Correct |
2 ms |
824 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
824 KB |
Output is correct |
| 2 |
Correct |
2 ms |
824 KB |
Output is correct |
| 3 |
Correct |
2 ms |
828 KB |
Output is correct |
| 4 |
Correct |
2 ms |
832 KB |
Output is correct |
| 5 |
Correct |
2 ms |
848 KB |
Output is correct |
| 6 |
Correct |
2 ms |
852 KB |
Output is correct |
| 7 |
Correct |
2 ms |
856 KB |
Output is correct |
| 8 |
Correct |
3 ms |
860 KB |
Output is correct |
| 9 |
Correct |
2 ms |
864 KB |
Output is correct |
| 10 |
Correct |
2 ms |
868 KB |
Output is correct |
| 11 |
Correct |
2 ms |
872 KB |
Output is correct |
| 12 |
Correct |
2 ms |
896 KB |
Output is correct |
| 13 |
Correct |
2 ms |
896 KB |
Output is correct |
| 14 |
Correct |
2 ms |
900 KB |
Output is correct |
| 15 |
Correct |
3 ms |
904 KB |
Output is correct |
| 16 |
Correct |
2 ms |
908 KB |
Output is correct |
| 17 |
Correct |
2 ms |
916 KB |
Output is correct |
| 18 |
Correct |
2 ms |
916 KB |
Output is correct |
| 19 |
Correct |
3 ms |
920 KB |
Output is correct |
| 20 |
Correct |
2 ms |
924 KB |
Output is correct |
| 21 |
Correct |
2 ms |
928 KB |
Output is correct |
| 22 |
Correct |
2 ms |
932 KB |
Output is correct |
| 23 |
Correct |
2 ms |
936 KB |
Output is correct |
| 24 |
Correct |
2 ms |
940 KB |
Output is correct |
| 25 |
Correct |
3 ms |
944 KB |
Output is correct |
| 26 |
Correct |
2 ms |
952 KB |
Output is correct |
| 27 |
Correct |
2 ms |
956 KB |
Output is correct |
| 28 |
Correct |
2 ms |
960 KB |
Output is correct |
| 29 |
Correct |
2 ms |
964 KB |
Output is correct |
| 30 |
Correct |
2 ms |
968 KB |
Output is correct |
| 31 |
Correct |
2 ms |
972 KB |
Output is correct |
| 32 |
Correct |
2 ms |
976 KB |
Output is correct |
| 33 |
Correct |
2 ms |
980 KB |
Output is correct |
| 34 |
Correct |
3 ms |
980 KB |
Output is correct |
| 35 |
Correct |
3 ms |
988 KB |
Output is correct |
| 36 |
Correct |
2 ms |
992 KB |
Output is correct |
| 37 |
Correct |
3 ms |
996 KB |
Output is correct |
| 38 |
Correct |
2 ms |
1000 KB |
Output is correct |
| 39 |
Correct |
2 ms |
1004 KB |
Output is correct |
| 40 |
Correct |
2 ms |
1012 KB |
Output is correct |
| 41 |
Correct |
2 ms |
1012 KB |
Output is correct |
| 42 |
Correct |
2 ms |
1144 KB |
Output is correct |
| 43 |
Correct |
3 ms |
1144 KB |
Output is correct |
| 44 |
Correct |
3 ms |
1144 KB |
Output is correct |
| 45 |
Correct |
2 ms |
1144 KB |
Output is correct |
