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QOJ
ID | 题目 | 提交者 | 结果 | 用时 | 内存 | 语言 | 文件大小 | 提交时间 | 测评时间 |
---|---|---|---|---|---|---|---|---|---|
#735021 | #9543. Good Partitions | CCF | RE | 240ms | 16876kb | C++20 | 3.0kb | 2024-11-11 16:42:16 | 2024-11-11 16:42:16 |
Judging History
answer
#include<bits/stdc++.h>
#include<numeric>
using namespace std;
typedef long long ll;
#define pii pair<int,int>
#define fs first
#define sc second
#define pb push_back
#define epb emplace_back
#define endl
#define SZ(X) (int)((X).size())
template<typename T>T mabs(T x){return x>=0?x:-x;}
const int N=1.1e6,mod=998244353;
int a[N],n;
struct trar{
ll tree[N];
#define lb(i) ((i)&-(i))
void _add(int i,ll x){
for(;i<=n;i+=lb(i))tree[i]+=x;
}
ll _sum(int r){
assert(r>0);
ll res=0;
for(;r>0;r^=lb(r))res+=tree[r];
return res;
}
ll query(int i){
return _sum(i);
}
void modify(int l,int r,ll x){
assert(l<=r);
ll adt=x;//-query(l);
_add(l,adt);
_add(r+1,-adt);
}
}L,R;
int ss[N];
void work(){
int q;
scanf("%d%d",&n,&q);
for(int i=1;i<=n;i++)scanf("%d",a+i);
int sq=sqrt(n+1);
map<int,int>bl;
auto era=[&](int x){
//cerr<<"ERA"<<x<<"#\n";
assert(bl[x]>0);
if(bl[x]>1)bl[x]--;
else if(bl[x]==1)bl.erase(x);
};
auto getans=[&](){
if(bl.size()<=sq){
if(bl.size()==0)return n;
int res=bl.begin()->fs;
for(auto e:bl)res=gcd(res,e.fs);
return ss[res];
}
else return 1;
};
int las=1;
for(int i=2;i<=n+1;i++){
if(a[i]<a[i-1]){
int l=las,r=i-1;
L.modify(l,r,l);
R.modify(l,r,r);
if(r<n)bl[r-l+1]++;
las=i;
}
}
cout<<getans()<<"\n";
// for(int i=1;i<=n;i++)
// cerr<<'('<<L.query(i)<<','<<R.query(i)<<")";cerr<<"\n";
// for(auto e:bl)
// cerr<<'('<<e.fs<<','<<e.sc<<")";cerr<<"\n";
a[0]=2e9+1;
for(int j=1;j<=q;j++){
int i,x;
scanf("%d%d",&i,&x);
set<pii>tmp;
for(int k=max(i-1,1);k<=min(i+1,n);k++)
tmp.insert(pii(L.query(k),R.query(k)));
for(auto e:tmp){
if(e.sc<n)era(e.sc-e.fs+1);
}
//cerr<<"$";
a[i]=x;
vector<pii>temp;
auto update=[&](int l,int r){
//cerr<<"up#"<<l<<" "<<r<<"\n";//
temp.pb(pii(l,r));
};
int l,r;
if(a[i-1]<=x&&x<=a[i+1]){
l=L.query(i-1),r=R.query(i+1);
update(l,r);
}
else if(a[i-1]<=x){
l=L.query(i-1),r=i;
update(l,r);
if(i<n){
l=i+1,r=R.query(i+1);
update(l,r);
}
}
else if(x<=a[i+1]){
l=i,r=R.query(i+1);
update(l,r);
if(i>1){
l=L.query(i-1),r=i-1;
update(l,r);
}
}
else{
if(i<n){
l=i+1,r=R.query(i+1);
update(l,r);
}
if(i>1){
l=L.query(i-1),r=i-1;
update(l,r);
}
update(i,i);
}
for(auto e:tmp)
L.modify(e.fs,e.sc,-e.fs),R.modify(e.fs,e.sc,-e.sc);
// for(int i=1;i<=n;i++)
// cerr<<'('<<L.query(i)<<",_"<<R.query(i)<<")";cerr<<"\n";
for(auto e:temp){
l=e.fs,r=e.sc;
L.modify(l,r,l),R.modify(l,r,r);
if(r<n)bl[r-l+1]++;
}
cout<<getans()<<"\n";
////
// for(int i=1;i<=n;i++)
// cerr<<'('<<L.query(i)<<','<<R.query(i)<<")";cerr<<"\n";
// for(auto e:bl)
// cerr<<'('<<e.fs<<';'<<e.sc<<")";cerr<<"\n";
}
}
int main(){
for(int i=1;i<=2e5;i++){
for(int j=1;j*j<=i;j++){
if(i%j==0)ss[i]+=1+(j!=i/j);
}
}
int t;
scanf("%d",&t);
while(t--)work();
return 0;
}
詳細信息
Test #1:
score: 100
Accepted
time: 113ms
memory: 11956kb
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: 109ms
memory: 10556kb
input:
1 1 1 2000000000 1 1999999999
output:
1 1
result:
ok 2 lines
Test #3:
score: 0
Accepted
time: 207ms
memory: 12784kb
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: 0
Accepted
time: 240ms
memory: 16876kb
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...
output:
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...
result:
ok 200001 lines
Test #5:
score: 0
Accepted
time: 204ms
memory: 13992kb
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:
2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 ...
result:
ok 200001 lines
Test #6:
score: -100
Runtime Error
input:
2 2 2 17017 63462 2 94054 2 13504 8 8 14380 5840 34752 73602 60279 26105 44308 78318 7 8597 2 70671 6 56663 5 90093 5 96853 3 10700 1 76875 6 27325