AtCoder Beginner Contest 003

Submission #1495339

Source codeソースコード

#include <stdio.h>

void quicksort(int a[], int low, int high) {
  if(high <= low)
    return;
  
    int x = a[low];
    int i = low;
    int j = high;
    int w;

    while(i <= j) {
      while(a[i] < x) {
	i++;
      }
      while(a[j] > x) {
	j--;
      }
      if(i <= j) {
	w = a[i];
	a[i] = a[j];
	a[j] = w;
	i++;
	j--;
      }
    }
    quicksort(a, low, j);
    quicksort(a, i, high);
    return;
}
  

int main(void) {
  int n, k, i;
  int r[100];
  double rate = 0;
  scanf("%d %d", &n, &k);
  for(i = 0; i < n; i++) {
    scanf("%d", &r[i]);
  }

  quicksort(r, 0, n-1);

  for(i = n-k; i < n; i++) {
    rate = (rate + r[i]) / 2;
  }

  printf("%f\n", rate);
  return(0);
}

Submission

Task問題 C - AtCoderプログラミング講座
User nameユーザ名 forestelements
Created time投稿日時
Language言語 C (GCC 5.4.1)
Status状態 AC
Score得点 100
Source lengthソースコード長 736 Byte
File nameファイル名
Exec time実行時間 1 ms
Memory usageメモリ使用量 128 KB

Compiler messageコンパイルメッセージ

./Main.c: In function ‘main’:
./Main.c:37:3: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
scanf("%d %d", &n, &k);
^
./Main.c:39:5: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
scanf("%d", &r[i]);
^

Test case

Set

Set name Score得点 / Max score Cases
All 100 / 100 00_sample_01.txt,00_sample_02.txt,00_sample_03.txt,00_sample_04.txt,test_01.txt,test_02.txt,test_03.txt,test_04.txt,test_05.txt,test_06.txt,test_07.txt,test_08.txt,test_09.txt,test_10.txt,test_11.txt,test_12.txt,test_13.txt,test_14.txt,test_15.txt,test_16.txt,test_17.txt,test_18.txt,test_19.txt,test_20.txt,test_21.txt,test_22.txt,test_23.txt,test_24.txt,test_25.txt,test_26.txt,test_27.txt,test_28.txt,test_29.txt,test_30.txt

Test case

Case name Status状態 Exec time実行時間 Memory usageメモリ使用量
00_sample_01.txt AC
00_sample_02.txt AC
00_sample_03.txt AC
00_sample_04.txt AC
test_01.txt AC
test_02.txt AC
test_03.txt AC
test_04.txt AC
test_05.txt AC
test_06.txt AC
test_07.txt AC 1 ms 128 KB
test_08.txt AC
test_09.txt AC
test_10.txt AC
test_11.txt AC
test_12.txt AC
test_13.txt AC
test_14.txt AC
test_15.txt AC
test_16.txt AC
test_17.txt AC
test_18.txt AC
test_19.txt AC
test_20.txt AC
test_21.txt AC
test_22.txt AC
test_23.txt AC 1 ms 128 KB
test_24.txt AC 1 ms 128 KB
test_25.txt AC 1 ms 128 KB
test_26.txt AC 1 ms 128 KB
test_27.txt AC 1 ms 128 KB
test_28.txt AC
test_29.txt AC 1 ms 128 KB
test_30.txt AC 1 ms 128 KB