QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#733772 | #9543. Good Partitions | Sunlight9# | TL | 164ms | 19556kb | C++20 | 3.5kb | 2024-11-10 20:57:28 | 2024-11-10 20:57:29 |
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(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(prime[i]>lim) 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
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 0ms
memory: 17992kb
input:
1 5 2 4 3 2 6 1 2 5 3 5
output:
1 2 3
result:
ok 3 lines
Test #2:
score: 0
Accepted
time: 0ms
memory: 18112kb
input:
1 1 1 2000000000 1 1999999999
output:
1 1
result:
ok 2 lines
Test #3:
score: 0
Accepted
time: 164ms
memory: 19556kb
input:
1 200000 200000 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 ...
output:
160 200000 160 200000 160 200000 160 200000 160 200000 160 200000 160 200000 160 200000 160 200000 160 200000 160 200000 160 200000 160 200000 160 200000 160 200000 160 200000 160 200000 160 200000 160 200000 160 200000 160 200000 160 200000 160 200000 160 200000 160 200000 160 200000 160 200000 160...
result:
ok 200001 lines
Test #4:
score: -100
Time Limit Exceeded
input:
1 200000 200000 200001 200000 199999 199998 199997 199996 199995 199994 199993 199992 199991 199990 199989 199988 199987 199986 199985 199984 199983 199982 199981 199980 199979 199978 199977 199976 199975 199974 199973 199972 199971 199970 199969 199968 199967 199966 199965 199964 199963 199962 1999...