QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#745769 | #9543. Good Partitions | P3KO | WA | 207ms | 12992kb | C++17 | 1.6kb | 2024-11-14 11:28:22 | 2024-11-14 11:28:31 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
const int MAXN=2e5+5;
typedef long long ll;
ll n,q,a[MAXN],d[MAXN];
ll gcd(ll x,ll y){
return y==0?x:gcd(y,x%y);
}
struct seg{
ll g;
}tr[MAXN*4];
void pushup(int p){
tr[p].g=gcd(tr[p<<1].g,tr[p<<1|1].g);
}
void build(int p,int l,int r){
if(l==r){
tr[p]={d[l]};
return;
}
int mid=l+r>>1;
build(p<<1,l,mid);
build(p<<1|1,mid+1,r);
pushup(p);
}
void insert(int p,int l,int r,int tag,ll v){
if(l==r){
tr[p].g=v;
return;
}
int mid=l+r>>1;
if(tag<=mid)insert(p<<1,l,mid,tag,v);
else insert(p<<1|1,mid+1,r,tag,v);
pushup(p);
}
int query(int p,int s,int t,int l,int r){
if(s>=l&&t<=r)return tr[p].g;
int mid=s+t>>1;
ll ans=0;
if(l<=mid)ans=gcd(query(p<<1,s,mid,l,r),ans);
if(r>mid)ans=gcd(query(p<<1|1,mid+1,t,l,r),ans);
return ans;
}
void input(){
cin>>n>>q;
for(int i=1;i<=n;i++)cin>>a[i];
}
int numfac(ll x){
if(x==0)return n;
int ans=1;
for(int i=2;x>1;i++){
int cnt=0;
if(x%i==0)
while(x%i==0)x/=i,cnt++;
ans*=(cnt+1);
}
return ans;
}
void solve(){
input();
if(n==1){
for(int i=0;i<=q;i++)
cout<<1<<"\n";
return;
}
for(int i=1;i<n;i++){
if(a[i+1]<a[i])d[i]=i;
else d[i]=0;
}
n--;
build(1,1,n);
cout<<numfac(query(1,1,n,1,n))<<"\n";
for(int i=1;i<=q;i++){
int p,v;cin>>p>>v;
a[p]=v;
if(p>1){
if(a[p]>=a[p-1])insert(1,1,n,p-1,0);
else insert(1,1,n,p-1,p-1);
}
if(p<=n){
if(a[p]<=a[p+1])insert(1,1,n,p,0);
else insert(1,1,n,p,p);
}
cout<<numfac(query(1,1,n,1,n))<<"\n";
}
}
int main(){
int t;cin>>t;
while(t--){
solve();
}
}
Details
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Test #1:
score: 100
Accepted
time: 1ms
memory: 5664kb
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: 1ms
memory: 5744kb
input:
1 1 1 2000000000 1 1999999999
output:
1 1
result:
ok 2 lines
Test #3:
score: -100
Wrong Answer
time: 207ms
memory: 12992kb
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 199999 160 199999 160 199999 160 199999 160 199999 160 199999 160 199999 160 199999 160 199999 160 199999 160 199999 160 199999 160 199999 160 199999 160 199999 160 199999 160 199999 160 199999 160 199999 160 199999 160 199999 160 199999 160 199999 160 199999 160 199999 160 199999 160 199999 160...
result:
wrong answer 2nd lines differ - expected: '200000', found: '199999'