Submission #1548569


Source Code Expand

//#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <string.h>

char buffer[200003] = { 0 };
int count[26] = { 0 };
int f(char c)
{
	return (c < 'a' || 'z' < c) ? 0 : 1;
}
int main(void)
{
	int i, cnt;
	long long answer;
	fgets(buffer, sizeof(buffer), stdin);
	for (cnt = 0; f(buffer[cnt]); ++cnt){
		count[buffer[cnt] - 'a']++;
	}
	answer = cnt * ((long long)cnt - 1) / 2 + 1;
	for (i = 0; i < 26; ++i){
		answer += -count[i] * ((long long)count[i] - 1) / 2;
	}
	printf("%lld\n", answer);
	return 0;
}

Submission Info

Submission Time
Task B - Reverse and Compare
User iseekautos
Language C (GCC 5.4.1)
Score 500
Code Size 538 Byte
Status AC
Exec Time 1 ms
Memory 384 KB

Compile Error

./Main.c: In function ‘main’:
./Main.c:15:2: warning: ignoring return value of ‘fgets’, declared with attribute warn_unused_result [-Wunused-result]
  fgets(buffer, sizeof(buffer), stdin);
  ^

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 500 / 500
Status
AC × 3
AC × 23
Set Name Test Cases
Sample sample_01.txt, sample_02.txt, sample_03.txt
All sample_01.txt, sample_02.txt, sample_03.txt, sample_01.txt, sample_02.txt, sample_03.txt, subtask_1_01.txt, subtask_1_02.txt, subtask_1_03.txt, subtask_1_04.txt, subtask_1_05.txt, subtask_1_06.txt, subtask_1_07.txt, subtask_1_08.txt, subtask_1_09.txt, subtask_1_10.txt, subtask_1_11.txt, subtask_1_12.txt, subtask_1_13.txt, subtask_1_14.txt, subtask_1_15.txt, subtask_1_16.txt, subtask_1_17.txt
Case Name Status Exec Time Memory
sample_01.txt AC 1 ms 128 KB
sample_02.txt AC 1 ms 128 KB
sample_03.txt AC 1 ms 128 KB
subtask_1_01.txt AC 1 ms 128 KB
subtask_1_02.txt AC 1 ms 384 KB
subtask_1_03.txt AC 1 ms 128 KB
subtask_1_04.txt AC 1 ms 128 KB
subtask_1_05.txt AC 1 ms 128 KB
subtask_1_06.txt AC 1 ms 128 KB
subtask_1_07.txt AC 1 ms 128 KB
subtask_1_08.txt AC 1 ms 384 KB
subtask_1_09.txt AC 1 ms 384 KB
subtask_1_10.txt AC 1 ms 384 KB
subtask_1_11.txt AC 1 ms 384 KB
subtask_1_12.txt AC 1 ms 384 KB
subtask_1_13.txt AC 1 ms 384 KB
subtask_1_14.txt AC 1 ms 384 KB
subtask_1_15.txt AC 1 ms 384 KB
subtask_1_16.txt AC 1 ms 384 KB
subtask_1_17.txt AC 1 ms 384 KB