oj.uz

Submission #469200

# Submission time Handle Problem Language Result Execution time Memory
469200 2021-08-31T06:10:57 Z Millad LIS (INOI20_lis) C++14
20 / 100
 4000 ms 117444 KB 
/// In the name of god
#include <bits/stdc++.h>
#pragma GCC target ("avx2")
#pragma GCC optimization ("O3")
#pragma GCC optimization ("unroll-loops")

#define F first
#define S second
#define pb push_back
#define debug(x) cerr << #x << " : " << x << '\n'
     
using namespace std;
typedef int ll;
typedef long double ld;
typedef pair<ll, ll> pll;
     
const ll maxn = 1e6 + 5;

ll q, x[maxn], p[maxn], b[maxn], ind[maxn], seg[maxn * 4], dp[maxn], lis;
set <ll> A[maxn], B[maxn];
vector <ll> Qu;
inline ll get_ind(ll id, ll ps = 0, ll v = 1, ll s = 0, ll e = q){
	if(e - s == 1){
		seg[v] = 1;
		return s;
	}
	ll mid = (e + s) >> 1, lc = v << 1, rc = lc | 1, ind;
	if(ps + (mid - s) - seg[lc] < id)ind = get_ind(id, ps + (mid - s) - seg[lc], rc, mid, e);
	else ind = get_ind(id, ps, lc, s, mid);
	seg[v] = seg[lc] + seg[rc];
	return ind;
}
int main(){
	ios::sync_with_stdio(false), cin.tie(0), cout.tie(0);
	cin >> q;
	for(ll i = 0; i < q; i ++)cin >> p[i] >> x[i];
	for(ll i = q - 1; i >= 0; i --){
		ind[i] = get_ind(p[i]);
		b[ind[i]] = x[i];
	}
	set<ll>::iterator pnt;
	for(ll i = 0; i < q; i ++){
		ll id = ind[i], d = 1;
		A[x[i]].insert(id);;
		for(ll j = 1; j < x[i]; j ++){
			if(A[j].empty())continue;
			if(*A[j].begin() > id)continue;
			pnt = A[j].upper_bound(id);
			pnt --; d = max(d, dp[*pnt] + 1);
		}
		dp[id] = d; B[d].insert(id);
		Qu.pb(id); lis = max(lis, d);
		while(Qu.size()){
			ll id2 = Qu.back(); Qu.pop_back();
			pnt = B[dp[id2]].lower_bound(id2);
			vector <ll> vec;
			while(true){
				pnt ++;
				if(pnt == B[dp[id2]].end())break;
				if(b[*pnt] < b[id2])break;
				if(b[*pnt] == b[id2])continue;
				vec.pb(*pnt);
			}
			for(ll j : vec){
				B[dp[j]].erase(j);
				dp[j] ++; lis = max(lis, dp[j]);
				B[dp[j]].insert(j); Qu.pb(j); 
			}
		}
		cout << lis << '\n';
	}
}

Compilation message

Main.cpp:4: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
    4 | #pragma GCC optimization ("O3")
      | 
Main.cpp:5: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
    5 | #pragma GCC optimization ("unroll-loops")
      |

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 52 ms 94148 KB Output is correct
2 Correct 50 ms 94232 KB Output is correct
3 Correct 55 ms 94448 KB Output is correct
4 Correct 55 ms 94492 KB Output is correct
5 Correct 83 ms 94496 KB Output is correct
6 Correct 67 ms 94404 KB Output is correct
7 Correct 63 ms 94512 KB Output is correct
8 Correct 63 ms 94508 KB Output is correct
9 Correct 66 ms 94504 KB Output is correct
10 Correct 59 ms 94532 KB Output is correct
11 Correct 60 ms 94504 KB Output is correct
12 Correct 62 ms 94516 KB Output is correct
13 Correct 63 ms 94616 KB Output is correct
14 Correct 65 ms 94520 KB Output is correct
15 Correct 60 ms 94476 KB Output is correct
16 Correct 64 ms 94520 KB Output is correct
17 Correct 66 ms 94464 KB Output is correct
18 Correct 72 ms 94452 KB Output is correct

Subtask #2
0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 52 ms 94148 KB Output is correct
2 Correct 50 ms 94232 KB Output is correct
3 Correct 55 ms 94448 KB Output is correct
4 Correct 55 ms 94492 KB Output is correct
5 Correct 83 ms 94496 KB Output is correct
6 Correct 67 ms 94404 KB Output is correct
7 Correct 63 ms 94512 KB Output is correct
8 Correct 63 ms 94508 KB Output is correct
9 Correct 66 ms 94504 KB Output is correct
10 Correct 59 ms 94532 KB Output is correct
11 Correct 60 ms 94504 KB Output is correct
12 Correct 62 ms 94516 KB Output is correct
13 Correct 63 ms 94616 KB Output is correct
14 Correct 65 ms 94520 KB Output is correct
15 Correct 60 ms 94476 KB Output is correct
16 Correct 64 ms 94520 KB Output is correct
17 Correct 66 ms 94464 KB Output is correct
18 Correct 72 ms 94452 KB Output is correct
19 Correct 361 ms 117316 KB Output is correct
20 Correct 366 ms 117444 KB Output is correct
21 Execution timed out 4089 ms 101904 KB Time limit exceeded
22 Halted 0 ms 0 KB -