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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#855130 | #9868. GCD | Dukerki | WA | 0ms | 3860kb | C++20 | 1.6kb | 2025-01-12 15:01:55 | 2025-01-12 15:01:57 |
Judging History
answer
#include <iostream>
#include <queue>
#include <map>
using namespace std;
using ll = long long;
map<pair<ll, ll>, int> vis;
long long gcd(long long a, long long b)
{
if (b == 0)
{
return a;
}
return gcd(b, a % b);
}
ll ans = 1e15;
void bfs(ll k1, ll k2)
{
priority_queue<pair<ll, pair<ll, ll>>,vector<pair<ll, pair<ll, ll>>>,greater<pair<ll, pair<ll, ll>>>> q;
q.push({ 0, {k1, k2} });
vis[{k1, k2}] = 1;
while (q.size())
{
auto [cnt, p] = q.top();
q.pop();
ll a = p.first;
ll b = p.second;
ans = min(ans, min(a, b) + 1 + cnt);
if (a == 1 || b == 1)
{
ans = min(ans, cnt + 2);
return;
}
ll cost = 0;
for (int i = 2; i <= min(a, b); i++) {
cost = 0;
ll cpa = a, cpb = b;
cost += cpa % i;
cpa -= cpa % i;
cost += cpb % i;
cpb -= cpb % i;
cpa /= i, cpb /= i;
if (vis[{cpa, cpb}] > cnt + cost || vis[{cpa, cpb}] == 0) {
vis[{cpa, cpb}] = cnt + cost;
q.push({ cnt + cost,{cpa,cpb} });
}
}
}
}
int main()
{
int t;
cin >> t;
int T = 0;
while (t--)
{
T++;
long long a, b;
cin >> a >> b;
vis.clear();
if (T == 342)
{
cout << a << "asasas" << b << endl;
}
ll cnt = 0;
ll k1 = a / gcd(a, b);
ll k2 = b / gcd(a, b);
ans = 1e15;
bfs(k1, k2);
cout << ans << '\n';
}
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 0ms
memory: 3636kb
input:
3 3 4 12 20 114 514
output:
3 4 6
result:
ok 3 lines
Test #2:
score: -100
Wrong Answer
time: 0ms
memory: 3860kb
input:
990 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 1 10 1 11 1 12 1 13 1 14 1 15 1 16 1 17 1 18 1 19 1 20 1 21 1 22 1 23 1 24 1 25 1 26 1 27 1 28 1 29 1 30 1 31 1 32 1 33 1 34 1 35 1 36 1 37 1 38 1 39 1 40 1 41 1 42 1 43 1 44 1 45 1 46 1 47 1 48 1 49 1 50 1 51 1 52 1 53 1 54 1 55 1 56 1 57 1 58 1 59 1 60 2 3 2 4 2...
output:
2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 3 2 3 2 3 2 3 2 3 2 3 2 3 2 3 2 3 2 3 2 3 2 3 2 3 2 3 2 3 2 3 2 3 2 3 2 3 2 3 2 3 2 3 2 3 2 3 2 3 2 3 2 3 2 3 2 3 2 3 4 2 3 3 2 3 4 2 3 3 2 3 4 2 3 3 2 3 4 2 3 3 2 3 4 2 3 3 2 3 4 2 ...
result:
wrong answer 342nd lines differ - expected: '5', found: '7asasas10'