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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#837128 | #9622. 有限小数 | propane# | WA | 79ms | 3836kb | C++20 | 1.2kb | 2024-12-29 16:35:03 | 2024-12-29 16:35:03 |
Judging History
answer
#include<iostream>
#include<cstring>
#include<vector>
#include<numeric>
using namespace std;
using LL = long long;
int main(){
#ifdef LOCAL
freopen("data.in", "r", stdin);
freopen("data.out", "w", stdout);
#endif
cin.tie(0);
cout.tie(0);
ios::sync_with_stdio(0);
const LL lim = 1e9;
vector<LL> cand;
for(int i = 0; ; i++){
LL t = 1LL << i;
if (t > lim) break;
for(int j = 0; ; j++){
if (t > lim) break;
cand.push_back(t);
t *= 5;
}
}
int T;
cin >> T;
while(T--){
int a, b;
cin >> a >> b;
LL mul = 1;
while(b % 2 == 0) b /= 2, mul *= 2;
while(b % 5 == 0) b /= 5, mul *= 5;
if (b == 1){
cout << 0 << ' ' << 1 << '\n';
continue;
}
a %= b;
pair<LL, LL> ans{1e18, 1e18};
for(auto t : cand){
LL l = (1LL * a * t + b - 1) / b;
LL nc = l * b - t * a;
LL nd = b * t;
LL g = gcd(nc, nd);
if (nd / g * mul <= lim) ans = min(ans, pair(nc / g, nd / g));
}
cout << ans.first << ' ' << ans.second * mul << '\n';
}
}
Details
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Test #1:
score: 100
Accepted
time: 0ms
memory: 3836kb
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: 79ms
memory: 3560kb
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 54272 1 60 1 350 1 231680000 23 3936 1 36096000 5 326 1 63360 0 1 1 31232 0 1 1 4880 1 10750 1 18500 1 11714560 1 331250 1 2944 1 31 1 6 1 289600000 1 455000 1 58880 1 51840 0 1 1 304 0 1 1 415 1 19328000 1 765000000 1 4640 1 608 1 72192 3 24800 1 192 3 347500 1 944 1 43600 1 1520 1 430000 1 ...
result:
wrong answer Jury found better answer than participant's 1 < 2 (Testcase 321)