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답안 #146676

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
146676 2019-08-25T07:02:57 Z pichulia 분수 (KPI13_fractions) C++11
1 / 1
 82 ms 3064 KB 
#include<stdio.h>
unsigned long long int find_r(unsigned long long int x, unsigned long long int a, unsigned long long int b)
{
    unsigned long long int l,r,mid;
    l=1; r=b;
    while(l<r)
    {
        mid = (l+r)/2;
        if((x + a*mid)/b < mid) r = mid;
        else l=mid+1;
    }
    return l-1;
}
unsigned long long int gcd(unsigned long long int p, unsigned long long int q)
{
    while(p%q){
        unsigned long long int t=p%q;
        p=q;
        q=t;
    }
    return q;
}
int main()
{
    int t;
    scanf("%d",&t);
    while(t--)
    {
        unsigned long long int a,b,c,d;
        unsigned long long int k,s;
        scanf("%llu %llu %llu %llu",&a,&b,&c,&d);
        unsigned long long int x,y;
        unsigned long long int p,q,r;
        unsigned long long int g;
        g = gcd(a,b);
        a/=g;
        b/=g;
        g = gcd(c,d);
        c/=g;
        d/=g;
        k = a/b;
        if((c-1)/d > k)
        {
            printf("%llu 1\n",k+1);
        }
        else
        {
            a %= b;
            c %= d;
            if(c==0)c=d;
        y=1;
        while(1)
        {
            p=d+(a*y/b)*d;
            q=c*y;
            if(p<q)break;
            r = a*y%b;
            s = find_r(r,a,b);
           // printf("%llu  %llu %llu %llu   %llu %llu  %llu\n",y, p,q,p-q,r,s, (p+(d-c)*s-q)/c);
            y += s+(p+(d-c)*s-q)/c+1;
        }
        x = a*y/b+1+k*y;
        printf("%llu %llu\n",x,y);
        }
    }
}

Compilation message

fractions.cpp: In function 'int main()':
fractions.cpp:26:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&t);
     ~~~~~^~~~~~~~~
fractions.cpp:31:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%llu %llu %llu %llu",&a,&b,&c,&d);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
1.0 / 1.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 256 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 2 ms 504 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 252 KB Output is correct
11 Correct 3 ms 376 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 256 KB Output is correct
16 Correct 2 ms 376 KB Output is correct
17 Correct 34 ms 1016 KB Output is correct
18 Correct 34 ms 1016 KB Output is correct
19 Correct 34 ms 1016 KB Output is correct
20 Correct 34 ms 1144 KB Output is correct
21 Correct 35 ms 1016 KB Output is correct
22 Correct 34 ms 1140 KB Output is correct
23 Correct 34 ms 1016 KB Output is correct
24 Correct 34 ms 1016 KB Output is correct
25 Correct 4 ms 376 KB Output is correct
26 Correct 54 ms 2808 KB Output is correct
27 Correct 55 ms 2808 KB Output is correct
28 Correct 57 ms 2808 KB Output is correct
29 Correct 56 ms 2780 KB Output is correct
30 Correct 56 ms 2808 KB Output is correct
31 Correct 53 ms 2808 KB Output is correct
32 Correct 57 ms 2936 KB Output is correct
33 Correct 61 ms 3064 KB Output is correct
34 Correct 8 ms 508 KB Output is correct
35 Correct 81 ms 2424 KB Output is correct
36 Correct 81 ms 2508 KB Output is correct
37 Correct 81 ms 2552 KB Output is correct
38 Correct 81 ms 2424 KB Output is correct
39 Correct 81 ms 2424 KB Output is correct
40 Correct 81 ms 2412 KB Output is correct
41 Correct 81 ms 2552 KB Output is correct
42 Correct 80 ms 2424 KB Output is correct
43 Correct 82 ms 2424 KB Output is correct
44 Correct 81 ms 2580 KB Output is correct
45 Correct 81 ms 2424 KB Output is correct
46 Correct 81 ms 2424 KB Output is correct
47 Correct 81 ms 2552 KB Output is correct
48 Correct 81 ms 2364 KB Output is correct
49 Correct 81 ms 2424 KB Output is correct
50 Correct 81 ms 2424 KB Output is correct