#include <bits/stdc++.h>
using namespace std;
#define int ll
#define FOR(i,s,e) for(ll i = s; i <= (ll)e; ++i)
#define DEC(i,s,e) for(ll i = s; i >= (ll)e; --i)
#define IAMSPEED ios_base::sync_with_stdio(false); cin.tie(0);
#ifdef LOCAL
#define db(x) cerr << #x << "=" << x << "\n"
#define db2(x, y) cerr << #x << "=" << x << " , " << #y << "=" << y << "\n"
#define db3(a,b,c) cerr<<#a<<"="<<a<<","<<#b<<"="<<b<<","<<#c<<"="<<c<<"\n"
#define dbv(v) cerr << #v << ":"; for (auto ite : v) cerr << ite << ' '; cerr <<"\n"
#define dbvp(v) cerr << #v << ":"; for (auto ite : v) cerr << "{" << ite.f << ',' << ite.s << "} "; cerr << "\n"
#define dba(a,ss,ee) cerr << #a << ":"; FOR(ite,ss,ee) cerr << a[ite] << ' '; cerr << "\n"
#else
#define db(x)
#define db2(x,y)
#define db3(a,b,c)
#define dbv(v)
#define dbvp(v)
#define dba(a,ss,ee)
#endif
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
#define ll long long
#define pb push_back
#define eb emplace_back
#define all(x) (x).begin(), (x).end()
#define f first
#define s second
#define g0(x) get<0>(x)
#define g1(x) get<1>(x)
#define g2(x) get<2>(x)
#define g3(x) get<3>(x)
#define reach cerr << "LINE: " << __LINE__ << "\n";
typedef pair <ll, ll> pi;
typedef tuple<ll,ll,ll> ti3;
typedef tuple<ll,ll,ll,ll> ti4;
ll rand(ll a, ll b) { return a + rng() % (b-a+1); }
const int MOD = 1e9 + 7;
const int inf = (int)1e9 + 500;
const long long oo = (ll)1e18 + 500;
template <typename T> bool chmax(T& a, const T b) { return a<b ? a = b, 1 : 0; }
template <typename T> bool chmin(T& a, const T b) { return a>b ? a = b, 1 : 0; }
const int MAXN = 200005;
int n,q;
map<int,int> val;
int A[MAXN];
int nxt[MAXN];
int where[MAXN];
int fw[MAXN];
vector<pi> Qs[MAXN];
int out[MAXN];
set<int> s;
void update(int x, int nval) {
for(;x<MAXN;x+=x&-x)fw[x]+=nval;
}
int sum(int x) {
int r=0;
for(;x;x-=x&-x)r+=fw[x];
return r;
}
int kth(int &k){
int actualk=k;
int csum = 0;
int pos = 0;
for (int i = 20; i >= 0; i--){
if (pos + (1 << i) < n && csum + fw[pos + (1 << i)] < actualk){
csum += fw[pos + (1 << i)];
pos += (1 << i);
k-=fw[pos];
}
}
return pos + 1;
}
int32_t main()
{
IAMSPEED
cin >> n >> q;
FOR(i,1,n) cin >> A[i];
FOR(qq,1,q) {
int t, x; cin >> t >> x;
Qs[min(t,n)].pb(pi(x,qq));
}
FOR(i,1,n) where[A[i]] = i;
stack<int> st;
DEC(i,n,1) {
while(st.size() && A[i] > st.top())st.pop();
if(st.empty())nxt[i]=n+1;
else {
nxt[i]=where[st.top()];
}
st.push(A[i]);
}
int it=1;
s.insert(it);
update(A[it],nxt[it]-it);
while(it<=n) {
it=nxt[it];
if(it>n)break;
s.insert(it);
db2(A[it],nxt[it]-it);
update(A[it], nxt[it] - it);
}
FOR(ti,0,n) {
db(ti);
cerr << "fw: ";
for(int j=1;j<=n;j++) {
cerr << sum(j) - sum(j-1) << ' ';
}
for(auto query:Qs[ti]) {
int val=kth(query.f);
int idx=where[val];
db2(val,query.f);
out[query.s]=A[where[val]+query.f-1];
}
int m=n/2+1;
int val=kth(m);
if(m==1) continue;
int len=sum(val) - sum(val-1);
int ed=where[val] + len;
update(val, -len + m - 1);
for(int id=where[val]+m-1;id<ed;id=nxt[id]) {
update(A[id], min(nxt[id],ed) - id);
}
}
FOR(i,1,q)cout<<out[i]<<"\n";
}
Compilation message
Main.cpp: In function 'int32_t main()':
Main.cpp:114:8: warning: unused variable 'idx' [-Wunused-variable]
114 | int idx=where[val];
| ^~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
294 ms |
59784 KB |
Execution killed with signal 11 |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Execution timed out |
3015 ms |
42060 KB |
Time limit exceeded |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Execution timed out |
3062 ms |
14644 KB |
Time limit exceeded |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
294 ms |
59784 KB |
Execution killed with signal 11 |
| 2 |
Halted |
0 ms |
0 KB |
- |
