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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 |
---|---|---|---|---|---|---|---|---|---|
#744601 | #9622. 有限小数 | dmrmra# | WA | 10ms | 3632kb | C++11 | 1.2kb | 2024-11-13 22:35:48 | 2024-11-13 22:35:51 |
Judging History
answer
//
// Created by 16373 on 2024/11/13.
//
#include <bits/stdc++.h>
#define int long long
using namespace std;
const int mod=998244353,inf=1e9;
int qpow(int a,int x){
int res=1;
while(x){
if(x&1) res=res*a;
x>>=1;
a*=a;
}
return res;
}
void solve(){
int a,b;
cin>>a>>b;
int prime=b;
int cnt2=0,cnt5=0;
while(prime%2==0){
cnt2++;
prime/=2;
}
while(prime%5==0){
cnt5++;
prime/=5;
}
int pw2=qpow(2,cnt2),pw5=qpow(5,cnt5);
int now2=1,res2,res5,mn=inf;
for(int i=0;prime*now2*pw2*pw5<=inf;i++,now2*=2){
int now=now2;
for(int j=0;prime*now*pw2*pw5<=inf;j++,now*=5){
int md=a*now%prime;
int ans=(prime-md)%prime;
if(ans<mn){
mn=ans;
res2=i; res5=j;
}
}
}
cout<<mn<<' '<<prime*qpow(2,res2)*qpow(5,res5)*pw2*pw5<<'\n';
}
signed main(){
ios::sync_with_stdio(0); cin.tie(0);
int t;
cin>>t;
while(t--){
solve();
}
return 0;
}
//2
//630
//3029 2336 377 41 10 61
//3000
//20000 10000 0 0 0 0
详细
Test #1:
score: 100
Accepted
time: 0ms
memory: 3592kb
input:
4 1 2 2 3 3 7 19 79
output:
0 2 1 3 1 4375 3 316
result:
ok 4 case(s)
Test #2:
score: -100
Wrong Answer
time: 10ms
memory: 3632kb
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 12 1 828125000 1 60 1 109375 1 231680000 23 960937500 1 36096000 5 326 1 63360 0 64 1 61000 0 32 1 4880 1 10750 1 18500 1 11714560 1 331250 1 898437500 1 31 1 6 1 289600000 1 455000 1 115000000 1 1265625 0 2 1 29687500 0 160 1 415 1 235937500 1 765000000 1 181250 1 2968750 1 4406250 3 24800 1 480 ...
result:
wrong answer Jury found better answer than participant's 1 < 2 (Testcase 321)