#include <stdio.h>
bool check[11][11][21];
long long d[11][11][21];
long long f(int x, int y, int len) {
if (len == 0) return 1;
if (!check[x][y][len]) {
check[x][y][len] = true;
if (x == 10 && y == 10) {
for (int i = 1; i < 10; i++) d[x][y][len] += f(10, i, len - 1);
d[x][y][len] += f(10, 10, len - 1);
}
else if (x == 10) {
for (int i = 0; i < 10; i++)
if (i != y) d[x][y][len] += f(y, i, len - 1);
}
else {
for (int i = 0; i < 10; i++) {
if (i == x || i == y) continue;
d[x][y][len] += f(y, i, len - 1);
}
}
} return d[x][y][len];
}
long long out(long long x) {
long long sum = 0, check_m;
int len = 0, temp[21] = { 0 }, in[21] = { 0 };
while (x) temp[++len] = x % 10, x /= 10;
for (int i = 1; i <= len; i++) in[len - i + 1] = temp[i];
in[0] = 10;
for (int i = len; i >= 2; i--) {
check_m = 1;
for (int j = 2; j < i; j++)
if (in[j - 2] == in[j] || in[j - 1] == in[j]) check_m = 0;
for (int j = 0; j < in[i]; j++)
if (j != in[i - 1] && j != in[i - 2]) sum += f(in[i - 1], j, len - i)*check_m;
}
for (int i = 1; i < in[1]; i++) sum += f(10, i, len - 1);
sum += f(10, 10, len - 1);
check_m = 1;
for (int j = 2; j <=len; j++)
if (in[j - 2] == in[j] || in[j - 1] == in[j]) check_m = 0;
return sum + check_m;
}
int main() {
long long x, y, sum;
scanf("%lld %lld", &x, &y);
sum = y ? out(y) : 1;
if (x > 1) sum -= out(x - 1);
else if (x == 1) sum -= 1;
printf("%lld", sum);
}
Compilation message
numbers.cpp: In function 'int main()':
numbers.cpp:58:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%lld %lld", &x, &y);
^
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
1132 KB |
Output is correct |
| 2 |
Correct |
0 ms |
1132 KB |
Output is correct |
| 3 |
Correct |
0 ms |
1132 KB |
Output is correct |
| 4 |
Correct |
0 ms |
1132 KB |
Output is correct |
| 5 |
Correct |
0 ms |
1132 KB |
Output is correct |
| 6 |
Correct |
0 ms |
1132 KB |
Output is correct |
| 7 |
Correct |
0 ms |
1132 KB |
Output is correct |
| 8 |
Correct |
0 ms |
1132 KB |
Output is correct |
| 9 |
Correct |
0 ms |
1132 KB |
Output is correct |
| 10 |
Correct |
0 ms |
1132 KB |
Output is correct |
| 11 |
Correct |
0 ms |
1132 KB |
Output is correct |
| 12 |
Correct |
0 ms |
1132 KB |
Output is correct |
| 13 |
Correct |
0 ms |
1132 KB |
Output is correct |
| 14 |
Correct |
0 ms |
1132 KB |
Output is correct |
| 15 |
Correct |
0 ms |
1132 KB |
Output is correct |
| 16 |
Correct |
0 ms |
1132 KB |
Output is correct |
| 17 |
Correct |
0 ms |
1132 KB |
Output is correct |
| 18 |
Correct |
0 ms |
1132 KB |
Output is correct |
| 19 |
Correct |
0 ms |
1132 KB |
Output is correct |
| 20 |
Correct |
0 ms |
1132 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
1132 KB |
Output is correct |
| 2 |
Correct |
0 ms |
1132 KB |
Output is correct |
| 3 |
Correct |
0 ms |
1132 KB |
Output is correct |
| 4 |
Correct |
0 ms |
1132 KB |
Output is correct |
| 5 |
Correct |
0 ms |
1132 KB |
Output is correct |
| 6 |
Correct |
0 ms |
1132 KB |
Output is correct |
| 7 |
Correct |
0 ms |
1132 KB |
Output is correct |
| 8 |
Correct |
0 ms |
1132 KB |
Output is correct |
| 9 |
Correct |
0 ms |
1132 KB |
Output is correct |
| 10 |
Correct |
0 ms |
1132 KB |
Output is correct |
| 11 |
Correct |
0 ms |
1132 KB |
Output is correct |
| 12 |
Correct |
0 ms |
1132 KB |
Output is correct |
| 13 |
Correct |
0 ms |
1132 KB |
Output is correct |
| 14 |
Correct |
0 ms |
1132 KB |
Output is correct |
| 15 |
Correct |
0 ms |
1132 KB |
Output is correct |
| 16 |
Correct |
0 ms |
1132 KB |
Output is correct |
| 17 |
Correct |
0 ms |
1132 KB |
Output is correct |
| 18 |
Correct |
0 ms |
1132 KB |
Output is correct |
| 19 |
Correct |
0 ms |
1132 KB |
Output is correct |
| 20 |
Correct |
0 ms |
1132 KB |
Output is correct |
| 21 |
Correct |
0 ms |
1132 KB |
Output is correct |
| 22 |
Correct |
0 ms |
1132 KB |
Output is correct |
| 23 |
Correct |
0 ms |
1132 KB |
Output is correct |
| 24 |
Correct |
0 ms |
1132 KB |
Output is correct |
| 25 |
Correct |
0 ms |
1132 KB |
Output is correct |
| 26 |
Correct |
0 ms |
1132 KB |
Output is correct |
| 27 |
Correct |
0 ms |
1132 KB |
Output is correct |
| 28 |
Correct |
0 ms |
1132 KB |
Output is correct |
| 29 |
Correct |
0 ms |
1132 KB |
Output is correct |
| 30 |
Correct |
0 ms |
1132 KB |
Output is correct |
| 31 |
Correct |
0 ms |
1132 KB |
Output is correct |
| 32 |
Correct |
0 ms |
1132 KB |
Output is correct |
| 33 |
Correct |
0 ms |
1132 KB |
Output is correct |
| 34 |
Correct |
0 ms |
1132 KB |
Output is correct |
| 35 |
Correct |
0 ms |
1132 KB |
Output is correct |
| 36 |
Correct |
0 ms |
1132 KB |
Output is correct |
| 37 |
Correct |
0 ms |
1132 KB |
Output is correct |
| 38 |
Correct |
0 ms |
1132 KB |
Output is correct |
| 39 |
Correct |
0 ms |
1132 KB |
Output is correct |
| 40 |
Correct |
0 ms |
1132 KB |
Output is correct |
| 41 |
Correct |
0 ms |
1132 KB |
Output is correct |
| 42 |
Correct |
0 ms |
1132 KB |
Output is correct |
| 43 |
Correct |
0 ms |
1132 KB |
Output is correct |
| 44 |
Correct |
0 ms |
1132 KB |
Output is correct |
| 45 |
Correct |
0 ms |
1132 KB |
Output is correct |
