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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#591229 | #8338. Quad Kingdoms Chess | Rosmontispes | WA | 26ms | 4408kb | C++20 | 3.0kb | 2024-09-26 14:52:22 | 2024-09-26 14:52:28 |
Judging History
answer
//14:23
#include<bits/stdc++.h>
using namespace std;
const int N = 100000 + 200;
const long long mod = 998244353;
const long long A = 131;
long long pre[N];
struct segtree{
#define ls(x) tree[x].ls
#define rs(x) tree[x].rs
struct node{
int mxlen,maxn,ls,rs;
long long hash;
};
int n,tot,rt;
vector<int>ar;
vector<node>tree;
segtree(int _n,vector<int>tmp):rt(0),tot(0),ar(tmp),n(_n),tree(4 * _n + 200){
build(1,n,rt);
}
pair<int,long long> qur(int x,int mx){
if(!x)
return {0,0};
if(tree[x].maxn < mx)
return {0,0};
if(tree[ls(x)].maxn < mx)
return qur(rs(x),mx);
if(tree[rs(x)].maxn >= mx){
pair<int,long long>ret = {tree[ls(x)].mxlen,tree[ls(x)].hash};
auto rret = qur(rs(x),mx);
ret.first += rret.first;
ret.second = (ret.second * pre[rret.first] % mod + rret.second) % mod;
return ret;
} else {
return qur(ls(x),mx);
}
}
node merge(int x){
node tmp = tree[x];
if(tree[rs(x)].maxn > tree[ls(x)].maxn){
tmp.mxlen = tree[rs(x)].mxlen;
tmp.maxn = tree[rs(x)].maxn;
tmp.hash = tree[rs(x)].hash;
return tmp;
} else {
auto [len,lhash] = qur(ls(x),tree[rs(x)].maxn);
tmp.mxlen = tree[rs(x)].mxlen + len;
tmp.maxn = tree[ls(x)].maxn;
tmp.hash = (lhash * pre[len] % mod + tree[rs(x)].hash) % mod;
return tmp;
}
}
void build(int l,int r,int &x){
if(!x)
x = ++ tot;
if(l == r){
tree[x] = {1,ar[l],0,0,ar[l]};
return;
}
int mid = (l + r) / 2;
build(l,mid,ls(x)),build(mid + 1,r,rs(x));
tree[x] = merge(x);
}
void modify(int l,int r,int x,int k,int val){
if(l == r){
tree[x].maxn = tree[x].hash = val;
return;
}
int mid = (l + r) / 2;
if(k <= mid)
modify(l,mid,ls(x),k,val);
else
modify(mid + 1,r,rs(x),k,val);
tree[x] = merge(x);
}
};
void solve(){
int n,m;
cin>>n;
vector<int>p(n + 1);
for(int i = 1;i <= n;i ++)
cin>>p[i];
cin>>m;
vector<int>q(m + 1);
for(int i = 1;i <= m;i ++){
cin>>q[i];
}
segtree A(n,p),B(m,q);
int Q;
cin>>Q;
for(int i = 1;i <= Q;i ++){
int opr,k,val;
cin>>opr>>k>>val;
if(opr == 1)
A.modify(1,n,1,k,val);
else
B.modify(1,m,1,k,val);
if(A.tree[1].hash == B.tree[1].hash && A.tree[1].mxlen == B.tree[1].mxlen)
cout<<"YES\n";
else
cout<<"NO\n";
}
}
int main(){
std::ios::sync_with_stdio(false);
std::cin.tie(nullptr);
pre[0] = 1;
for(int i = 1;i <= 100000;i ++){
pre[i] = pre[i - 1] * A % mod;
}
solve();
}
Details
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Test #1:
score: 100
Accepted
time: 1ms
memory: 4408kb
input:
5 1 2 3 4 5 5 5 4 3 2 1 8 1 1 5 1 4 2 1 2 4 1 5 1 1 5 5 2 1 4 2 3 5 2 5 5
output:
NO NO NO YES NO NO NO YES
result:
ok 8 tokens
Test #2:
score: -100
Wrong Answer
time: 26ms
memory: 4336kb
input:
1 2 6 2 1 1 1 1 1 200000 2 6 2 1 1 1 1 1 1 1 1 2 2 1 1 1 1 2 1 1 1 2 4 1 2 1 2 1 1 1 1 1 2 2 5 1 1 1 1 1 1 2 1 1 1 2 6 1 1 1 2 1 1 2 1 1 2 2 3 1 1 1 1 2 1 1 2 6 2 1 1 2 2 4 1 1 1 2 2 6 1 1 1 2 1 1 1 2 5 2 2 6 2 1 1 1 2 4 2 2 5 2 2 6 2 1 1 1 2 5 1 2 6 2 1 1 2 1 1 1 1 1 1 2 4 1 1 1 2 1 1 2 1 1 2 2 3 2...
output:
YES NO NO YES YES YES NO NO NO NO YES YES NO YES NO NO NO NO NO NO NO NO NO YES YES YES NO NO NO NO NO NO NO NO NO NO NO NO YES NO NO NO YES YES YES YES YES NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO...
result:
wrong answer 1st words differ - expected: 'NO', found: 'YES'