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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#734122 | #9543. Good Partitions | Dixiky_215 | WA | 0ms | 17920kb | C++20 | 3.6kb | 2024-11-11 00:47:26 | 2024-11-11 00:47:27 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
const int MAXN=5e5+7;
int t;
int n,m;
int a[MAXN];
int cnt=0,prime[MAXN];
bool vis[MAXN];
void pre()
{
int lim=5e5;
vis[1]=1;
for(int i=2;i<=lim;i++)
{
if(!vis[i]) prime[++cnt]=i;
for(int j=1;j<=cnt && i*prime[j]<=lim;j++)
{
vis[i*prime[j]]=1;
if(i%prime[j]==0) break;
}
}
return;
}
set< pair<int,int> > s[MAXN/2];
int tot=0;
bool pd[MAXN];
int ton[MAXN];
set<int> id;
void add(int x)
{
int lim=sqrt(x);
int sss=x;
for(int i=1;i<=cnt;i++)
{
if(!vis[x]) break;
if(prime[i]*prime[i]>lim) break;
if(x%prime[i]) continue;
int numk=0;
while(x%prime[i]==0) numk++,x/=prime[i];
s[prime[i]].insert({numk,sss});
if(!ton[prime[i]]) id.insert(prime[i]);
ton[prime[i]]++;
}
if(x!=1)
{
s[x].insert({1,sss});
if(!ton[x]) id.insert(x);
ton[x]++;
}
return;
}
void del(int x)
{
int lim=sqrt(x);
int sss=x;
for(int i=1;i<=cnt;i++)
{
if(!vis[x]) break;
if(prime[i]*prime[i]>x) break;
if(x%prime[i]) continue;
int numk=0;
while(x%prime[i]==0) numk++,x/=prime[i];
s[prime[i]].erase(s[prime[i]].find({numk,sss}));
ton[prime[i]]--;
if(!ton[prime[i]]) id.erase(prime[i]);
}
if(x!=1)
{
s[x].erase({1,sss});
ton[x]--;
if(!ton[x]) id.erase(x);
}
return;
}
int get_ans()
{
int res=1;
int numk=0;
for(auto i : id)
{
int idk=i;
if(s[idk].size()==tot)
{
auto it=s[idk].begin();
int sumk=1,lim=(*it).first;
for(int j=1;j<=lim;j++) sumk*=idk;
res*=sumk;
}
}
return res;
}
int get_num(int x)
{
int res=0;
for(int i=1;i*i<=x;i++)
{
if(x%i) continue;
res++;
if(i*i==x) break;
res++;
}
return res;
}
int main() {
cin.tie(nullptr) -> sync_with_stdio(false);
pre();
cin>>t;
while(t--)
{
cin>>n>>m;
for(int i=1;i<=n;i++) cin>>a[i];
for(int i=2;i<=n;i++)
{
if(a[i]<a[i-1])
{
pd[i-1]=1;
tot++;
add(i-1);
}
}
// cerr<<" asd"<<endl;
int ans;
if(tot==0) ans=n;
else ans=get_num(get_ans());
cout<<ans<<"\n";
while(m--)
{
int loc,v;
cin>>loc>>v;
if(loc>1&&a[loc]<a[loc-1])
{
pd[loc-1]=0;
tot--;
del(loc-1);
}
if(loc<n&&a[loc+1]<a[loc])
{
pd[loc]=0;
tot--;
del(loc);
}
a[loc]=v;
if(loc>1&&a[loc]<a[loc-1])
{
pd[loc-1]=1;
tot++;
add(loc-1);
}
if(loc<n&&a[loc+1]<a[loc])
{
pd[loc]=1;
tot++;
add(loc);
}
if(tot==0) ans=n;
else ans=get_num(get_ans());
cout<<ans<<'\n';
}
tot=0;
id.clear();
for(int i=0;i<=n;i++)
{
pd[i]=0;ton[i]=0;
s[i].clear();
}
}
return 0;
}
Details
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Test #1:
score: 0
Wrong Answer
time: 0ms
memory: 17920kb
input:
1 5 2 4 3 2 6 1 2 5 3 5
output:
1 1 3
result:
wrong answer 2nd lines differ - expected: '2', found: '1'