Osajono

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

char* input;
unsigned counter;

void copy(size_t size, char *src, char *dest)
{
  for (size_t i = 0; i < size; ++i)
    dest[i] = src[i];
}

void readInput()
{
  size_t size = 8, used = 0;
  input = (char*) malloc(size);
  goto read;
 reserve:;
  {
    size *= 2;
    char* new_input = (char*) malloc(size);
    copy(used, input, new_input);
    free(input);
    input = new_input;
  }
 read:;
  char c = fgetc(stdin);
  if (c == '\n' || c == EOF)
    goto end;
  input[used++] = c;
  if (used == size)
    goto reserve;
  goto read;
 end:;
  input[used] = '\0';
}

void getResults()
{
  size_t size = strlen(input);
  for (size_t i = 0; i < size; ++i)
    for (size_t j = 0; j < size - i; ++j)
      //printf("%c == %c", input[j], input[j + i]);
      if (input[j] == input[j + i])
	++counter;
}

int main()
{
  readInput();
  getResults();
  printf("%d\n", counter);
}

Test 1

Group: 1

Verdict: ACCEPTED

Test 2

Group: 1

Verdict: ACCEPTED

Test 3

Group: 1

Verdict: ACCEPTED

Test 4

Group: 1

Verdict: ACCEPTED

Test 5

Group: 1

Verdict: ACCEPTED

Test 6

Group: 2

Verdict: ACCEPTED

Test 7

Group: 2

Verdict: ACCEPTED

Test 8

Group: 2

Verdict: ACCEPTED

Test 9

Group: 2

Verdict: ACCEPTED

Test 10

Group: 2

Verdict: ACCEPTED

Test 11

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 12

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 13

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 14

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 15

Group: 3

Verdict: TIME LIMIT EXCEEDED