oj.uz

Submission #469198

# Submission time Handle Problem Language Result Execution time Memory
469198 2021-08-31T06:08:33 Z Millad LIS (INOI20_lis) C++14
20 / 100
 4000 ms 117408 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];
	}
	for(ll i = 0; i < q; i ++){
		ll id = ind[i], d = 1;
		A[x[i]].insert(id); set<ll>::iterator pnt;
		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 94152 KB Output is correct
2 Correct 57 ms 94244 KB Output is correct
3 Correct 58 ms 94544 KB Output is correct
4 Correct 54 ms 94400 KB Output is correct
5 Correct 81 ms 94512 KB Output is correct
6 Correct 64 ms 94472 KB Output is correct
7 Correct 61 ms 94472 KB Output is correct
8 Correct 61 ms 94520 KB Output is correct
9 Correct 61 ms 94416 KB Output is correct
10 Correct 59 ms 94532 KB Output is correct
11 Correct 62 ms 94416 KB Output is correct
12 Correct 59 ms 94504 KB Output is correct
13 Correct 62 ms 94524 KB Output is correct
14 Correct 63 ms 94404 KB Output is correct
15 Correct 58 ms 94452 KB Output is correct
16 Correct 60 ms 94488 KB Output is correct
17 Correct 61 ms 94404 KB Output is correct
18 Correct 60 ms 94404 KB Output is correct

Subtask #2
0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 52 ms 94152 KB Output is correct
2 Correct 57 ms 94244 KB Output is correct
3 Correct 58 ms 94544 KB Output is correct
4 Correct 54 ms 94400 KB Output is correct
5 Correct 81 ms 94512 KB Output is correct
6 Correct 64 ms 94472 KB Output is correct
7 Correct 61 ms 94472 KB Output is correct
8 Correct 61 ms 94520 KB Output is correct
9 Correct 61 ms 94416 KB Output is correct
10 Correct 59 ms 94532 KB Output is correct
11 Correct 62 ms 94416 KB Output is correct
12 Correct 59 ms 94504 KB Output is correct
13 Correct 62 ms 94524 KB Output is correct
14 Correct 63 ms 94404 KB Output is correct
15 Correct 58 ms 94452 KB Output is correct
16 Correct 60 ms 94488 KB Output is correct
17 Correct 61 ms 94404 KB Output is correct
18 Correct 60 ms 94404 KB Output is correct
19 Correct 372 ms 117284 KB Output is correct
20 Correct 400 ms 117408 KB Output is correct
21 Execution timed out 4061 ms 101840 KB Time limit exceeded
22 Halted 0 ms 0 KB -