QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#673430 | #6440. Xingqiu's Joke | prime-ideal | WA | 11ms | 3576kb | C++20 | 2.2kb | 2024-10-24 22:20:21 | 2024-10-24 22:20:21 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
#define RN return
#define forw(_,l,r) for(auto _=(l);_<(r);++_)
#define fors(_,r,l) for(auto _=(r);_>(l);--_)
#define fastio cin.tie(0),cout.tie(0),ios::sync_with_stdio(0);
void read(){}
template<typename T,typename...Types>
void read(T&a,Types&...args){
a=0; char c=' ';
while(isspace(c))c=getchar();
while(isdigit(c))a=10*a+c-'0',c=getchar();
read(args...);
}
typedef long long ll;
typedef vector<int> vi;
typedef pair<int,int> pii;
const int INF=0x3f3f3f3f,NUM=1e5;
const ll INFL=0x3f3f3f3f3f3f3f3f;
int lst[NUM][3]={},top=0,a,b;
void clear(){
top=-1;
}
void dfs(int bg,vector<pii>& pv){
// cout<<bg<<':';
// for(auto [p,c]:pv)cout<<p<<' '<<c<<' ';
// cout<<"---\n";
vector<pii> pv2; int ltop=1;
for(auto [p,c]:pv){
int siz=ltop;
memset(lst+siz,0x3f,((ltop*=(c+1))-siz)*sizeof(lst[0]));
for(int i=0,base=bg;i<c;++i,base+=siz){
for(int j=base,k=j+siz;j<base+siz;++j,++k){
lst[k][2]=lst[j][2]*p;
int f1=lst[k][2],f0=lst[j][2],x0=b%f0,x1=b%f1;
int y0=x0?f0-x0:0,y1=x1?f1-x1:0;
lst[k][0]=min(lst[k][0],lst[j][0]+1+x1/f0);
lst[k][1]=min(lst[k][1],lst[j][1]+1+y1/f0);
if(x1==y1)lst[k][1]=lst[k][0]=min(lst[k][1],lst[k][0]);
else{
lst[k][0]=min(lst[k][0],lst[j][1]+2+y1/f0);
lst[k][1]=min(lst[k][1],lst[j][0]+2+x1/f0);
}
}dfs(base+siz,pv2);
}pv2.push_back({p,c});
}top=ltop;
}
void solve(){
read(a,b);
if(a<b)swap(a,b);
int x=a-b;
forw(i,0,3)lst[0][i]=i/2;
vector<pii> pv;
int sq=sqrt(x)+10;
forw(i,2,sq){int c=0;while(x%i==0)++c,x/=i;if(c)pv.push_back({i,c});}
if(x!=1)pv.push_back({x,1});
dfs(0,pv);
int ans=INF;
forw(i,0,top){
int f=lst[i][2],del=b/f;
ans=min({ans,lst[i][0]+del,lst[i][1]+del+1});
}cout<<ans-1<<'\n';
}
signed main()
{
// solve();
// forw(i,0,ltop)cout<<lst[i][2]<<' ';
// RN 0;
// cout<<lst[ltop-1][2]<<endl;
// test();
int t;read(t);
while(t--){
clear();
solve();
}
RN 0;
}
/*
1
615 433
223528529 446621399
*/
/*
10
651 806
667 787
243 758
932 572
311 420
596 805
40 581
349 396
496 843
399 751
*/
Details
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Test #1:
score: 100
Accepted
time: 0ms
memory: 3552kb
input:
5 4 7 9 8 32 84 11 35 2 1
output:
2 7 5 4 0
result:
ok 5 number(s): "2 7 5 4 0"
Test #2:
score: -100
Wrong Answer
time: 11ms
memory: 3576kb
input:
300 223528529 446621399 755625805 978718675 257717538 480810408 277875777 54782907 963091558 739998688 282469431 505562301 38752451 261845321 474429597 697522467 67026335 290119205 874629705 651536835 301964126 78871256 316864911 93772041 545942587 322849717 640801578 417708708 683070559 906163429 9...
output:
14 21 16 18 16 19 13 21 17 20 15 15 20 19 17 20 17 21 15 16 17 19 21 18 19 20 17 17 24 18 13 22 16 21 13 18 17 18 16 17 14 19 14 19 15 15 19 21 18 16 22 20 16 18 16 18 17 16 19 17 17 20 19 18 17 17 16 16 25 17 15 18 18 22 18 16 18 19 12 18 21 19 18 20 20 16 19 14 18 18 18 12 22 22 19 19 19 14 15 16 ...
result:
wrong answer 1st numbers differ - expected: '12', found: '14'