Monistus

input/code.cpp: In function 'int main()':
input/code.cpp:25:14: warning: ignoring return value of 'ssize_t write(int, const void*, size_t)' declared with attribute 'warn_unused_result' [-Wunused-result]
   25 |   (void)write(STDOUT_FILENO, s, l);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~

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

typedef unsigned char u1;

int main() {

  u1 s[500000];

  unsigned long l = read(STDIN_FILENO, s, 20);
  printf("wa and not ce?\n");

  for (u1 *c = s; *c != '\n';) {
    if (*c - (u1)'0' < 9) {
      unsigned long n = *c - '0';
      memmove(c + n, c + 1, l - (unsigned long)(c - s) - 1);
      memcpy(c, c + n, n);
      l += n;
    } else {
      c++;
    }
  }

  (void)write(STDOUT_FILENO, s, l);

  return 0;
}

Test 1

Group: 1, 2

Verdict: RUNTIME ERROR

*** buffer overflow detected ***: terminated

Test 2

Group: 1, 2

Verdict: RUNTIME ERROR

*** buffer overflow detected ***: terminated

Test 3

Group: 1, 2

Verdict: RUNTIME ERROR

*** buffer overflow detected ***: terminated

Test 4

Group: 1, 2

Verdict: RUNTIME ERROR

Test 5

Group: 1, 2

Verdict: RUNTIME ERROR

Test 6

Group: 1, 2

Verdict: RUNTIME ERROR

Test 7

Group: 1, 2

Verdict: RUNTIME ERROR

*** buffer overflow detected ***: terminated

Test 8

Group: 2

Verdict: RUNTIME ERROR

*** buffer overflow detected ***: terminated

Test 9

Group: 2

Verdict: RUNTIME ERROR

Test 10

Group: 2

Verdict: RUNTIME ERROR

*** buffer overflow detected ***: terminated

Test 11

Group: 2

Verdict: RUNTIME ERROR

*** buffer overflow detected ***: terminated

Test 12

Group: 2

Verdict: RUNTIME ERROR

Test 13

Group: 2

Verdict: RUNTIME ERROR

*** buffer overflow detected ***: terminated

Test 14

Group: 2

Verdict: RUNTIME ERROR

*** buffer overflow detected ***: terminated