QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#733601 | #9543. Good Partitions | Sunlight9# | TL | 2ms | 4272kb | C++20 | 1.8kb | 2024-11-10 20:03:16 | 2024-11-10 20:03:16 |
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;
}
bool check(int l,int r)
{
for(int i=l+1;i<=r;i++)
{
if(a[i]<a[i-1]) return 0;
}
return 1;
}
int main() {
// freopen("data.out","r",stdin);
// freopen("std.out","w",stdout);
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];
int ans=0;
for(int k=1;k<=n;k++)
{
int num=n/k;
bool kkk=1;
for(int i=0;i<=num;i++)
{
int l=i*k+1,r=(i+1)*k;
if(l>n) break;
r=min(r,n);
if(!check(l,r)) {kkk=0;break;}
}
if(kkk) ans++;
}
cout<<ans<<'\n';
while(m--)
{
int loc,v;
cin>>loc>>v;
a[loc]=v;
ans=0;
for(int k=1;k<=n;k++)
{
int num=n/k;
bool kkk=1;
for(int i=0;i<=num;i++)
{
int l=i*k+1,r=(i+1)*k;
if(l>n) break;
r=min(r,n);
if(!check(l,r)) {kkk=0;break;}
}
if(kkk) ans++;
}
cout<<ans<<'\n';
}
}
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 2ms
memory: 4184kb
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: 2ms
memory: 4272kb
input:
1 1 1 2000000000 1 1999999999
output:
1 1
result:
ok 2 lines
Test #3:
score: -100
Time Limit Exceeded
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 ...