oj.uz

Submission #563441

# Submission time Handle Problem Language Result Execution time Memory
563441 2022-05-17T08:11:27 Z tht2005 Palindrome-Free Numbers (BOI13_numbers) C++17
100 / 100
 1 ms 464 KB 
#include <bits/stdc++.h>

using namespace std;

typedef long long LL;

char a[20];
LL f[20][2][11][11];

LL calc(LL x) {
    sprintf(a, "%lld", x);
    int n = strlen(a);
    for(int i = 0; i <= n; ++i) {
        memset(f[i], 0, sizeof(f[i]));
    }
    f[0][0][10][10] = 1;
    for(int i = 0; i < n; ++i) {
        for(int t = 0; t < 2; ++t) {
            for(int j = 0; j < 11; ++j) {
                for(int k = 0; k < 11; ++k) {
                    LL ft = f[i][t][j][k];
                    if(ft == 0) continue;
                    if(k == 10) f[i + 1][1][10][10] += ft;
                    for(int c = (k == 10); t ? (c < 10) : (c <= a[i] - '0'); ++c) {
                        if(c == j || c == k) continue;
                        f[i + 1][t || (c < a[i] - '0')][k][c] += ft;
                    }
                }
            }
        }
    }
    LL res = 0;
    for(int i = 0; i < 11; ++i) {
        for(int j = 0; j < 11; ++j) {
            res += f[n][1][i][j];
        }
    }
    return res;
}

int main() {
    LL l, r;
    scanf("%lld %lld", &l, &r);
    printf("%lld", calc(r + 1) - calc(l) + (l == 0));
    return 0;
}

Compilation message

numbers.cpp: In function 'int main()':
numbers.cpp:43:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   43 |     scanf("%lld %lld", &l, &r);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~~~

Subtask #1
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct

Subtask #2
75.0 / 75.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 0 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 464 KB Output is correct
22 Correct 1 ms 212 KB Output is correct
23 Correct 0 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 212 KB Output is correct
26 Correct 1 ms 212 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 1 ms 212 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 1 ms 212 KB Output is correct
35 Correct 1 ms 340 KB Output is correct
36 Correct 1 ms 212 KB Output is correct
37 Correct 1 ms 340 KB Output is correct
38 Correct 1 ms 212 KB Output is correct
39 Correct 1 ms 340 KB Output is correct
40 Correct 1 ms 340 KB Output is correct
41 Correct 1 ms 340 KB Output is correct
42 Correct 1 ms 212 KB Output is correct
43 Correct 1 ms 340 KB Output is correct
44 Correct 1 ms 212 KB Output is correct
45 Correct 1 ms 340 KB Output is correct