Vuodet

input/code.cpp: In function 'int main()':
input/code.cpp:9:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
    9 |     scanf("%d%d", &a, &b);
      |     ~~~~~^~~~~~~~~~~~~~~~

#include <stdio.h>
#include <string.h>

int main(void)
{
    int nans = 0;
    int ans[1000];
    int a, b;
    scanf("%d%d", &a, &b);
    for (int i=a; i<=b; i++) {
        char s[100];
        char buf[100];
        sprintf(s, "%d", i);
        sprintf(buf, "%d", 1337*i);
        const char *p = buf;
        for (int j=0; s[j]; j++) {
            p = strchr(p, s[j]);
            if (!p)
                goto fail;
            p++;
        }
        ans[nans++] = i;
        fail:;
    }
    printf("%d\n", nans);
    for (int i=0; i<nans; i++) {
        printf("%d\n", ans[i]);
    }
}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED