BOJ 4344๋ฒˆ: ํ‰๊ท ์€ ๋„˜๊ฒ ์ง€

2020. 8. 21. 11:51ยท์•Œ๊ณ ๋ฆฌ์ฆ˜/BaekJoon
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๋ฌธ์ œ

๋ฐ˜์˜ ๊ฐฏ์ˆ˜๋ฅผ ์ž…๋ ฅ๋ฐ›๊ณ  ๋ฐ˜์˜ ํ•™์ƒ์ˆ˜๋ฅผ ์ž…๋ ฅ๋ฐ›๊ณ  ๊ฐ๊ฐ ํ•™์ƒ๋“ค์˜ ์ ์ˆ˜๋ฅผ ์ž…๋ ฅ๋ฐ›์€ ํ›„ ๊ทธ๋“ค์˜ ํ‰๊ท ์„ ๊ตฌํ•ด์„œ ๋ฐ˜์—์„œ ํ‰๊ท ์„ ๋„˜๋Š” ํ•™์ƒ๋“ค์˜ ๋น„์œจ์„ ์ถœ๋ ฅํ•˜๋ผ

 

์ถœ๋ ฅ

๊ฐ ์ผ€์ด์Šค๋งˆ๋‹ค ํ•œ ์ค„์”ฉ ํ‰๊ท ์„ ๋„˜๋Š” ํ•™์ƒ๋“ค์˜ ๋น„์œจ์„ ๋ฐ˜์˜ฌ๋ฆผํ•˜์—ฌ ์†Œ์ˆ˜์  ์…‹์งธ ์ž๋ฆฌ๊นŒ์ง€ ์ถœ๋ ฅํ•œ๋‹ค

 

์ž…๋ ฅ

5

5
5 50 50 70 80 100
7 100 95 90 80 70 60 50
3 70 90 80
3 70 90 81
9 100 99 98 97 96 95 94 93 91

 

์ถœ๋ ฅ

40.000%

57.143%

33.333%

66.667%

55.556%

 

์ฝ”๋“œ (๋”๋ณด๊ธฐ๋ฅผ ๋ˆŒ๋Ÿฌ ํ™•์ธํ•˜์„ธ์š”)

๋”๋ณด๊ธฐ
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#include <iostream>
 
int main() {
    int C,studentNum,count=0;
    float sum=0,average=0;
    scanf("%d",&C);
    for(int i=0;i<C;i++){
        scanf("%d",&studentNum);
        float array[studentNum]={0,};
        for(int j=0;j<studentNum;j++){
            scanf("%f",&array[j]);
            sum+=array[j];
        }
        average = sum/studentNum;    //sum์ด flaotํ˜•์ด๋ฏ€๋กœ floatํ˜•์œผ๋กœ ๋ณ€ํ™˜
        for(int j=0;j<studentNum;j++){
            if(average<array[j]){    count++;
            }
        }
        printf("%.3f%\n",(float)count/studentNum*100);    //์†Œ์ˆ˜์  3์งธ๊นŒ์ง€ ์ถœ๋ ฅ
        sum=0;
        count=0;
    }
    return 0;
}
Colored by Color Scripter
cs

 

*๊ฐ„๋‹จํ•œ ํ•ด์„ค*

์ฒ˜์Œ ๋Œ€์ถฉ ์ฝ๊ณ  ํ‰๊ท ์„ ๊ตฌํ•˜๋Š” ์ค„ ์•Œ๊ณ  ๋ฐฐ์—ด์„ ํ• ๋‹นํ•˜์ง€ ์•Š์•˜๋‹ค๊ฐ€ ํ‰๊ท ์˜ ๋น„์œจ์„ ๊ตฌํ•˜๋Š” ๊ฒƒ์„ ๋ณด๊ณ  ๋‹ค์‹œ ๋ฐฐ์—ด์„ ์„ ์–ธํ–ˆ๋‹ค. ๋ฐฐ์—ด ์„ ์–ธ์€ ์œ ๋™์ ์œผ๋กœ ํ•˜๊ธฐ ์œ„ํ•ด for๋ฌธ ์•ˆ์— ์ง‘์–ด๋„ฃ์—ˆ์œผ๋ฉฐ ๋ชจ๋“  ์ž…๋ ฅ์„ ๋ฐ›์œผ๋ฉด์„œ sum(ํ•ฉ)์„ ๊ตฌํ•œ ๋’ค average(ํ‰๊ท )์„ sum/ํ•™์ƒ์ˆ˜ ๋กœ ๊ตฌํ•˜์˜€๋‹ค. %.3f ์ธ์ž๋ฅผ ์ด์šฉํ•ด์„œ ์†Œ์ˆ˜์  3์งธ์ž๋ฆฌ๊นŒ์ง€ ์ถœ๋ ฅํ•˜๋„๋ก ํ•˜์˜€๋‹ค. ์ถœ๋ ฅ ํ›„ ๋‹ค์Œ for๋ฌธ์—์„œ ๊ฐ™์€ ๋™์ž‘์„ ์ˆ˜ํ–‰ํ•˜๊ธฐ ์œ„ํ•ด sum๊ณผ count๋ฅผ ์ดˆ๊ธฐํ™”ํ•˜์˜€๋‹ค.

 

*๋ฉ”๋ชจ๋ฆฌ*

1984B

*์‹œ๊ฐ„*

0ms

*์–ธ์–ด*

C++ 14

*์ฝ”๋“œ ๊ธธ์ด*

532B

 

 

*์ด ๋ฐฉ๋ฒ•๋งŒ์ด ๋งž๋Š” ์ •๋‹ต์€ ์•„๋‹™๋‹ˆ๋‹ค.

ํ›จ์”ฌ ์ข‹๊ณ  ๋น ๋ฅธ ๋‹ค๋ฅธ ์•Œ๊ณ ๋ฆฌ์ฆ˜์„ ๊ตฌํ˜„ํ•  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.

์•Œ๊ณ ๋ฆฌ์ฆ˜ ๊ณต๋ถ€ํ•˜์‹œ๋Š” ๋ถ„๋“ค ํ™”์ดํŒ…! '0'/*

 

๋ฐ˜์‘ํ˜•

'์•Œ๊ณ ๋ฆฌ์ฆ˜ > BaekJoon' ์นดํ…Œ๊ณ ๋ฆฌ์˜ ๋‹ค๋ฅธ ๊ธ€

BOJ 4673๋ฒˆ: ์…€ํ”„ ๋„˜๋ฒ„  (0) 2020.09.22
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BOJ 1546๋ฒˆ: ํ‰๊ท   (0) 2020.08.13
BOJ 3052๋ฒˆ: ๋‚˜๋จธ์ง€  (0) 2020.08.11
'์•Œ๊ณ ๋ฆฌ์ฆ˜/BaekJoon' ์นดํ…Œ๊ณ ๋ฆฌ์˜ ๋‹ค๋ฅธ ๊ธ€
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