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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#130749 | #5466. Permutation Compression | tselmegkh | RE | 2ms | 9720kb | C++20 | 4.0kb | 2023-07-24 22:51:53 | 2023-07-24 22:51:54 |
Judging History
answer
#include <iostream>
#include <algorithm>
#include <vector>
#include <set>
#include <map>
#include <queue>
#include <stack>
#include <cstdlib>
#include <cmath>
#include <cstring>
#include <iomanip>
using namespace std;
const int N = 2e5 + 5, inf = 1e9;
#define pb push_back
#define mp make_pair
#define ll long long
#define ff first
#define ss second
#define all(a) a.begin(),a.end()
#define sz(x) (int)x.size()
typedef vector<int> vi;
typedef pair<int,int> ii;
typedef vector<ii> vii;
struct Node {
int val;
int sum;
Node(){
val = sum = 0;
}
};
Node t[N * 4];
int a[N], y[N];
Node combine(Node a, Node b){
Node c;
c.sum = a.sum + b.sum;
c.val = max(a.val, b.val);
return c;
}
void build(int v, int l, int r){
if(l == r){
t[v].val = a[l];
t[v].sum = 0;
return;
}
int mid = (l + r) / 2;
build(v * 2, l, mid);
build(v * 2 + 1, mid + 1, r);
t[v] = combine(t[v * 2], t[v * 2 + 1]);
}
void update(int v, int l, int r, int pos){
if(l == pos && r == pos){
t[v].val = -inf;
t[v].sum = 1;
return;
}
if(l > pos || r < pos)return;
int mid = (l + r) / 2;
update(v * 2, l, mid, pos);
update(v * 2 + 1, mid + 1, r, pos);
t[v] = combine(t[v * 2], t[v * 2 + 1]);
}
int query(int v, int l, int r, int ql, int qr, bool isSum){
if(l > qr || r < ql){
if(isSum)return 0;
return -inf;
}
if(ql <= l && r <= qr){
if(isSum)return t[v].sum;
return t[v].val;
}
int mid = (l + r) / 2;
if(isSum){
return query(v * 2, l, mid, ql, qr, isSum) + query(v * 2 + 1, mid + 1, r, ql, qr, isSum);
} else {
return max(query(v * 2, l, mid, ql, qr, isSum), query(v * 2 + 1, mid + 1, r, ql, qr, isSum));
}
}
void solve(){
int n, m, k;
cin >> n >> m >> k;
vi pos(n + 1);
vector<bool> vis(n + 1);
set<ii> s;
for(int i = 1; i <= n; i++){
cin >> a[i];
pos[a[i]] = i;
}
build(1, 1, n);
for(int i = 1; i <= n; i++){
s.insert({i, pos[i]});
}
bool flag = false;
for(int i = 1; i <= m; i++){
cin >> y[i];
vis[y[i]] = true;
s.erase(s.lower_bound({y[i], -1}));
}
vi v;
for(int i = 1; i <= n; i++){
if(vis[a[i]]){
v.pb(a[i]);
}
}
for(int i = 1; i <= m; i++){
if(y[i] != v[i - 1]){
cout << "NO\n";
return;
}
}
multiset<int> tools;
for(int i = 0; i < k; i++){
int x; cin >> x;
tools.insert(x);
}
while(!s.empty()){
auto x = s.rbegin();
int todelete = x->ff, idx = x->ss;
s.erase(*x);
int l = idx, r = n;
int fl, fr;
while(l != r){
int mid = (l + r + 1) / 2;
if(query(1, 1, n, idx, mid, false) == todelete){
l = mid;
} else {
r = mid - 1;
}
}
fr = l;
l = 1, r = idx;
while(l != r){
int mid = (l + r) / 2;
if(query(1, 1, n, mid, idx, false) == todelete){
r = mid;
} else {
l = mid + 1;
}
}
fl = l;
int value = fr - fl + 1 - query(1, 1, n, fl, fr, true);
if(tools.empty()){
cout << "NO\n";
return;
}
auto it = tools.upper_bound(value);
if(it != tools.begin()){
it--;
}
int tool = (*it);
if(tool > value){
cout << "NO\n";
return;
}
tools.erase(it);
update(1, 1, n, idx);
}
cout << "YES\n";
}
int main(){
ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
int t = 1;
cin >> t;
while(t--){
solve();
}
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 2ms
memory: 9720kb
input:
3 5 2 3 5 1 3 2 4 5 2 1 2 4 5 5 5 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 3 2 2 3 1 2 3 2 2 3
output:
YES YES NO
result:
ok 3 lines
Test #2:
score: -100
Dangerous Syscalls
input:
100 2 1 2 2 1 2 1 1 2 1 2 1 2 1 2 2 2 1 1 1 2 1 2 6 1 5 3 4 2 5 6 1 3 5 2 1 1 1 6 1 6 2 1 3 6 4 5 1 4 1 2 2 1 4 3 3 2 2 1 3 2 1 3 2 2 1 1 1 1 1 1 1 1 1 1 1 1 2 1 2 2 1 2 1 2 4 4 3 2 1 3 4 2 1 3 4 4 3 1 1 1 1 1 1 1 6 5 1 6 2 5 4 3 1 6 2 4 3 1 4 1 1 1 1 1 1 6 5 3 3 6 1 4 5 2 3 6 1 4 2 3 3 4 4 3 4 3 4 ...