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QOJ
ID | 题目 | 提交者 | 结果 | 用时 | 内存 | 语言 | 文件大小 | 提交时间 | 测评时间 |
---|---|---|---|---|---|---|---|---|---|
#750922 | #9622. 有限小数 | sixx_onee | WA | 25ms | 3648kb | C++20 | 1.6kb | 2024-11-15 16:21:53 | 2024-11-15 16:22:00 |
Judging History
answer
#include <bits/stdc++.h>
#define int long long
using namespace std;
const int N = 1e5 + 10;
int num[N], cnt;
long long quik_power(int base, int power)
{
long long result = 1;
while (power > 0)
{
if (power & 1)
result = result * base;
base = base * base;
power >>= 1;
}
return result;
}
int exgcd(int a,int b,int &x,int &y)
{
if(!b){x = 1,y = 0;return a;}
else
{
int d = exgcd(b,a%b,x,y);
int c = y;
y = x-a/b*y;
x = c;
return d;
}
}
void solve()
{
int c = 0x3f3f3f3f3f3f3f3f;
int a, b;
cin >> a >> b;
int p = b;
int ansd = 0;
while (p % 2 == 0)
p /= 2;
while (p% 5 == 0)
p /= 5;
if(p==1){
cout << 0 << ' ' << 1 << endl;
return;
}
for (int i = 1; i <= cnt; i++)
{
int d = num[i] * p;
if (d > 1e9)
break;
int x,y,aq1;
aq1 = a*num[i];
exgcd(b/p,-p,x,y);
x = -aq1*x;
//y = aq1*y;
x = (x%p+p)%p;
if(c>x)c = x,ansd = d;
}
cout << c << ' ' << ansd << endl;
}
signed main()
{
int tt = 1;
cin >> tt;
for (int i = 0; i <= 29; i++)
{
for (int j = 0; j <= 12; j++)
{
int cc = quik_power(2, i) * quik_power(5, j);
if (cc <= 1e9)
{
num[++cnt] = cc;
}
else
break;
}
}
sort(num + 1, num + 1 + cnt);
// cout << cnt << endl;
while (tt--)
{
solve();
}
}
详细
Test #1:
score: 100
Accepted
time: 1ms
memory: 3648kb
input:
4 1 2 2 3 3 7 19 79
output:
0 1 1 3 1 14 3 316
result:
ok 4 case(s)
Test #2:
score: -100
Wrong Answer
time: 25ms
memory: 3644kb
input:
10000 11 12 28 53 17 60 2 35 17 181 80 123 68 141 79 163 71 99 13 64 33 61 15 32 16 61 11 86 33 74 128 143 40 53 7 23 30 31 5 6 86 181 73 91 13 23 71 81 1 2 7 38 117 160 33 83 129 151 88 153 25 58 16 19 19 141 95 124 43 96 71 139 11 59 106 109 93 152 34 43 17 99 1 57 20 159 16 25 5 73 159 170 172 17...
output:
1 3 1 54272 1 3 1 7 1 231680000 23 3936 1 36096000 5 326 1 63360 0 1 1 31232 0 1 1 4880 1 344 1 118400 1 11714560 1 331250 1 2944 1 31 1 3 1 289600000 1 455000 1 58880 1 51840 0 1 1 4750 0 1 1 415 1 19328000 1 765000000 1 29000 1 608 1 72192 3 775 1 6 3 347500 1 944 1 43600 1 23750 1 430000 1 6336 1...
result:
wrong answer The result is not terminating.(Testcase 3)