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Submission #766247

# Submission time Handle Problem Language Result Execution time Memory
766247 2023-06-25T12:12:04 Z Valters07 Sequence (APIO23_sequence) C++17
100 / 100
 1557 ms 66900 KB 
#include <bits/stdc++.h>
#include "sequence.h"
#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx2,bmi,bmi2,popcnt,lzcnt")
#define fio ios_base::sync_with_stdio(0);cin.tie(0);
#define ll long long
#define en cin.close();return 0;
#define pb push_back
#define fi first//printf("%lli\n",cur);
#define se second//scanf("%lli",&n);
using namespace std;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
const int N = 5e5+5;
struct node
{
    int c[2], lzy[2];
    node operator +(node t)
    {
        node ret;
        ret.c[0]=min(c[0],t.c[0]);
        ret.c[1]=max(c[1],t.c[1]);
        ret.lzy[0]=ret.lzy[1]=0;
        return ret;
    }
};
vector<int> pos[N];
node segt[4*N];
int n;
void init()
{
    for(int i = 0;i<4*n;i++)
        segt[i]={0,0,0,0};
}
bool cmp(int a, int b)
{
    return a<b;
}
void updlzy(int pos, int siz)
{
    for(int i = 0;i<2;i++)
    {
        int &lzy = segt[pos].lzy[i];
        if(lzy)
        {
            segt[pos].c[i]+=lzy;
            if(siz>1)
                segt[pos*2].lzy[i]+=lzy,
                segt[pos*2+1].lzy[i]+=lzy;
            lzy=0;
        }
    }
}
void upd(int lb, int rb, int val1, int val2, int l = 0, int r = n, int pos = 1)
{
    updlzy(pos,r-l+1);
    if(rb<l||r<lb)
        return;
    if(lb<=l&&r<=rb)
        segt[pos].lzy[0]+=val1,
        segt[pos].lzy[1]+=val2,
        updlzy(pos,r-l+1);
    else
    {
        int mid = (l+r)/2;
        upd(lb,rb,val1,val2,l,mid,pos*2);
        upd(lb,rb,val1,val2,mid+1,r,pos*2+1);
        segt[pos]=segt[pos*2]+segt[pos*2+1];
    }
}
pair<int,int> get1(int lb, int rb, int l = 0, int r = n, int pos = 1)
{
    if(rb<l||r<lb)
        return {1e9,-1e9};
    updlzy(pos,r-l+1);
    if(lb<=l&&r<=rb)
        return {segt[pos].c[0],segt[pos].c[1]};
    int mid = (l+r)/2;
    auto t1 = get1(lb,rb,l,mid,pos*2), t2 = get1(lb,rb,mid+1,r,pos*2+1);
    return {min(t1.fi,t2.fi),max(t1.se,t2.se)};
}
int sequence(int n1, vector<int> a)
{
    n=n1;
    for(int i = 0;i<n;i++)
        pos[a[i]].pb(i+1);
    init();
    for(int i = 1;i<=n;i++)
        upd(i,n,1,1);
    vector<int> mil(n+1), mxl(n+1);
    for(int i = 1;i<=n;i++)
    {
        for(auto x:pos[i])
            mil[x]=get1(0,x-1).fi;
        for(auto x:pos[i])
            upd(x,n,-2,-2);
        for(auto x:pos[i])
            mxl[x]=get1(0,x-1).se;
    }
    init();
    for(int i = 1;i<=n;i++)
        upd(i,n,1,1);
    int ans = 1;
    for(int i = 1;i<=n;i++)
    {
        for(auto x:pos[i])
            upd(x,n,-2,0);
        for(int j = (int)pos[i].size()-ans-1;j>=0;j--)
        {
            int l = pos[i][j];
            while(j+ans<pos[i].size())
            {
                int r = pos[i][j+ans];
                auto segr = get1(r,n);
                int lval = segr.fi-mxl[l], rval = segr.se-mil[l];
                if(lval<=0&&0<=rval)
                    ans++;
                else
                    break;
            }
        }
        for(auto x:pos[i])
            upd(x,n,0,-2);
    }
    return ans;
}

Compilation message

sequence.cpp: In function 'int sequence(int, std::vector<int>)':
sequence.cpp:110:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  110 |             while(j+ans<pos[i].size())
      |                   ~~~~~^~~~~~~~~~~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 11988 KB Output is correct
2 Correct 6 ms 11988 KB Output is correct
3 Correct 5 ms 11988 KB Output is correct
4 Correct 6 ms 11988 KB Output is correct
5 Correct 5 ms 11988 KB Output is correct
6 Correct 5 ms 11988 KB Output is correct
7 Correct 5 ms 11988 KB Output is correct
8 Correct 6 ms 11988 KB Output is correct
9 Correct 6 ms 12044 KB Output is correct
10 Correct 5 ms 11988 KB Output is correct
11 Correct 7 ms 11988 KB Output is correct
12 Correct 7 ms 11988 KB Output is correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 11988 KB Output is correct
2 Correct 6 ms 11988 KB Output is correct
3 Correct 5 ms 11988 KB Output is correct
4 Correct 6 ms 11988 KB Output is correct
5 Correct 5 ms 11988 KB Output is correct
6 Correct 5 ms 11988 KB Output is correct
7 Correct 5 ms 11988 KB Output is correct
8 Correct 6 ms 11988 KB Output is correct
9 Correct 6 ms 12044 KB Output is correct
10 Correct 5 ms 11988 KB Output is correct
11 Correct 7 ms 11988 KB Output is correct
12 Correct 7 ms 11988 KB Output is correct
13 Correct 8 ms 12248 KB Output is correct
14 Correct 8 ms 12244 KB Output is correct
15 Correct 8 ms 12220 KB Output is correct
16 Correct 8 ms 12232 KB Output is correct
17 Correct 8 ms 12116 KB Output is correct
18 Correct 9 ms 12244 KB Output is correct
19 Correct 8 ms 12116 KB Output is correct
20 Correct 9 ms 12244 KB Output is correct
21 Correct 8 ms 12204 KB Output is correct
22 Correct 8 ms 12204 KB Output is correct

Subtask #3
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 11988 KB Output is correct
2 Correct 949 ms 61120 KB Output is correct
3 Correct 974 ms 61112 KB Output is correct
4 Correct 918 ms 53316 KB Output is correct
5 Correct 975 ms 60168 KB Output is correct
6 Correct 937 ms 60172 KB Output is correct
7 Correct 918 ms 53652 KB Output is correct
8 Correct 902 ms 53808 KB Output is correct
9 Correct 910 ms 53332 KB Output is correct

Subtask #4
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 11988 KB Output is correct
2 Correct 953 ms 53424 KB Output is correct
3 Correct 1030 ms 53340 KB Output is correct
4 Correct 949 ms 53292 KB Output is correct
5 Correct 986 ms 53464 KB Output is correct
6 Correct 974 ms 53432 KB Output is correct

Subtask #5
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1210 ms 66836 KB Output is correct
2 Correct 1262 ms 66860 KB Output is correct
3 Correct 1301 ms 66364 KB Output is correct
4 Correct 1230 ms 66372 KB Output is correct
5 Correct 1164 ms 62912 KB Output is correct
6 Correct 1143 ms 62924 KB Output is correct
7 Correct 1012 ms 61740 KB Output is correct
8 Correct 1000 ms 61412 KB Output is correct

Subtask #6
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 11988 KB Output is correct
2 Correct 6 ms 11988 KB Output is correct
3 Correct 5 ms 11988 KB Output is correct
4 Correct 6 ms 11988 KB Output is correct
5 Correct 5 ms 11988 KB Output is correct
6 Correct 5 ms 11988 KB Output is correct
7 Correct 5 ms 11988 KB Output is correct
8 Correct 6 ms 11988 KB Output is correct
9 Correct 6 ms 12044 KB Output is correct
10 Correct 5 ms 11988 KB Output is correct
11 Correct 7 ms 11988 KB Output is correct
12 Correct 7 ms 11988 KB Output is correct
13 Correct 8 ms 12248 KB Output is correct
14 Correct 8 ms 12244 KB Output is correct
15 Correct 8 ms 12220 KB Output is correct
16 Correct 8 ms 12232 KB Output is correct
17 Correct 8 ms 12116 KB Output is correct
18 Correct 9 ms 12244 KB Output is correct
19 Correct 8 ms 12116 KB Output is correct
20 Correct 9 ms 12244 KB Output is correct
21 Correct 8 ms 12204 KB Output is correct
22 Correct 8 ms 12204 KB Output is correct
23 Correct 181 ms 19916 KB Output is correct
24 Correct 179 ms 19784 KB Output is correct
25 Correct 189 ms 19924 KB Output is correct
26 Correct 165 ms 18992 KB Output is correct
27 Correct 169 ms 18872 KB Output is correct
28 Correct 163 ms 18876 KB Output is correct
29 Correct 151 ms 18620 KB Output is correct
30 Correct 141 ms 18712 KB Output is correct
31 Correct 141 ms 18660 KB Output is correct
32 Correct 135 ms 20812 KB Output is correct
33 Correct 178 ms 19724 KB Output is correct
34 Correct 200 ms 19736 KB Output is correct
35 Correct 172 ms 19668 KB Output is correct
36 Correct 175 ms 19684 KB Output is correct
37 Correct 175 ms 19700 KB Output is correct
38 Correct 181 ms 19680 KB Output is correct

Subtask #7
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 11988 KB Output is correct
2 Correct 6 ms 11988 KB Output is correct
3 Correct 5 ms 11988 KB Output is correct
4 Correct 6 ms 11988 KB Output is correct
5 Correct 5 ms 11988 KB Output is correct
6 Correct 5 ms 11988 KB Output is correct
7 Correct 5 ms 11988 KB Output is correct
8 Correct 6 ms 11988 KB Output is correct
9 Correct 6 ms 12044 KB Output is correct
10 Correct 5 ms 11988 KB Output is correct
11 Correct 7 ms 11988 KB Output is correct
12 Correct 7 ms 11988 KB Output is correct
13 Correct 8 ms 12248 KB Output is correct
14 Correct 8 ms 12244 KB Output is correct
15 Correct 8 ms 12220 KB Output is correct
16 Correct 8 ms 12232 KB Output is correct
17 Correct 8 ms 12116 KB Output is correct
18 Correct 9 ms 12244 KB Output is correct
19 Correct 8 ms 12116 KB Output is correct
20 Correct 9 ms 12244 KB Output is correct
21 Correct 8 ms 12204 KB Output is correct
22 Correct 8 ms 12204 KB Output is correct
23 Correct 949 ms 61120 KB Output is correct
24 Correct 974 ms 61112 KB Output is correct
25 Correct 918 ms 53316 KB Output is correct
26 Correct 975 ms 60168 KB Output is correct
27 Correct 937 ms 60172 KB Output is correct
28 Correct 918 ms 53652 KB Output is correct
29 Correct 902 ms 53808 KB Output is correct
30 Correct 910 ms 53332 KB Output is correct
31 Correct 953 ms 53424 KB Output is correct
32 Correct 1030 ms 53340 KB Output is correct
33 Correct 949 ms 53292 KB Output is correct
34 Correct 986 ms 53464 KB Output is correct
35 Correct 974 ms 53432 KB Output is correct
36 Correct 1210 ms 66836 KB Output is correct
37 Correct 1262 ms 66860 KB Output is correct
38 Correct 1301 ms 66364 KB Output is correct
39 Correct 1230 ms 66372 KB Output is correct
40 Correct 1164 ms 62912 KB Output is correct
41 Correct 1143 ms 62924 KB Output is correct
42 Correct 1012 ms 61740 KB Output is correct
43 Correct 1000 ms 61412 KB Output is correct
44 Correct 181 ms 19916 KB Output is correct
45 Correct 179 ms 19784 KB Output is correct
46 Correct 189 ms 19924 KB Output is correct
47 Correct 165 ms 18992 KB Output is correct
48 Correct 169 ms 18872 KB Output is correct
49 Correct 163 ms 18876 KB Output is correct
50 Correct 151 ms 18620 KB Output is correct
51 Correct 141 ms 18712 KB Output is correct
52 Correct 141 ms 18660 KB Output is correct
53 Correct 135 ms 20812 KB Output is correct
54 Correct 178 ms 19724 KB Output is correct
55 Correct 200 ms 19736 KB Output is correct
56 Correct 172 ms 19668 KB Output is correct
57 Correct 175 ms 19684 KB Output is correct
58 Correct 175 ms 19700 KB Output is correct
59 Correct 181 ms 19680 KB Output is correct
60 Correct 1479 ms 60992 KB Output is correct
61 Correct 1475 ms 61116 KB Output is correct
62 Correct 1464 ms 61112 KB Output is correct
63 Correct 1314 ms 54392 KB Output is correct
64 Correct 1382 ms 54412 KB Output is correct
65 Correct 1445 ms 54368 KB Output is correct
66 Correct 994 ms 53348 KB Output is correct
67 Correct 1047 ms 53560 KB Output is correct
68 Correct 979 ms 53176 KB Output is correct
69 Correct 960 ms 66900 KB Output is correct
70 Correct 1557 ms 60220 KB Output is correct
71 Correct 1533 ms 60000 KB Output is correct
72 Correct 1430 ms 59556 KB Output is correct
73 Correct 1408 ms 59972 KB Output is correct
74 Correct 1407 ms 59524 KB Output is correct
75 Correct 1434 ms 59924 KB Output is correct