oj.uz

Submission #863758

# Submission time Handle Problem Language Result Execution time Memory
863758 2023-10-21T00:40:33 Z prohacker Global Warming (CEOI18_glo) C++14
100 / 100
 163 ms 18848 KB 
#include <bits/stdc++.h>
#define ll long long
#define ld long double

using namespace std;

const int N = 2e5+10;
const int INF = INT_MAX;
const int mod = 1e9+7;

ll a[N],n,r[N],bit[4*N];
ll m;
vector<ll> pos = {};
ll b[N],ans,res;

void pre_calc() {
    for(int i = 0 ; i <= n ; i++) {
        pos.push_back(a[i]+1);
        pos.push_back(a[i]);
        pos.push_back(a[i]-m+1);
    }
    sort(pos.begin(),pos.end());
    pos.resize(unique(pos.begin(),pos.end())-pos.begin());
}

ll get_val(ll x) {
    return lower_bound(pos.begin(),pos.end(),x)-pos.begin()+1;
}

void update(ll id, ll val) {
    while(id > 0) {
        bit[id] = max(bit[id],val);
        id -= (id & (-id));
    }
}

ll get(ll id) {
    ll res = 0;
    while(id <= 3*N) {
        res = max(res,bit[id]);
        id += (id & (-id));
    }
    return res;
}

signed main()
{
    if (fopen("GLO.inp", "r")) {
        freopen("GLO.inp", "r", stdin);
        freopen("GLO.out", "w", stdout);
    }
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    cin >> n >> m;
    for(int i = 1 ; i <= n ; i++) {
        cin >> a[i];
    }
    pre_calc();
    for(int i = n ; i >= 1 ; i--) {
        ll id = get_val(a[i]-m+1);
        r[i] = get(id)+1;
        ll id2 = get_val(a[i]);
        id = get_val(a[i]+1);
        update(id2,get(id)+1);
        ans = max(ans,r[i]);
    }
    for(int i = 1 ; i <= n ; i++) {
        ll id = lower_bound(b+1,b+res+1,a[i])-b;
        b[id] = a[i];
        res = max(res,id);
        ans = max(ans,id+r[i]-1);
        ans = max(ans,res);
    }
    cout << ans;
    return 0;
}

Compilation message

glo.cpp: In function 'int main()':
glo.cpp:49:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   49 |         freopen("GLO.inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
glo.cpp:50:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   50 |         freopen("GLO.out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6488 KB Output is correct
2 Correct 1 ms 6644 KB Output is correct
3 Correct 1 ms 6492 KB Output is correct
4 Correct 1 ms 6620 KB Output is correct
5 Correct 1 ms 6492 KB Output is correct
6 Correct 1 ms 6492 KB Output is correct
7 Correct 1 ms 6492 KB Output is correct
8 Correct 1 ms 6492 KB Output is correct
9 Correct 1 ms 6492 KB Output is correct
10 Correct 1 ms 6492 KB Output is correct
11 Correct 1 ms 6488 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6488 KB Output is correct
2 Correct 1 ms 6644 KB Output is correct
3 Correct 1 ms 6492 KB Output is correct
4 Correct 1 ms 6620 KB Output is correct
5 Correct 1 ms 6492 KB Output is correct
6 Correct 1 ms 6492 KB Output is correct
7 Correct 1 ms 6492 KB Output is correct
8 Correct 1 ms 6492 KB Output is correct
9 Correct 1 ms 6492 KB Output is correct
10 Correct 1 ms 6492 KB Output is correct
11 Correct 1 ms 6488 KB Output is correct
12 Correct 1 ms 6492 KB Output is correct
13 Correct 1 ms 6492 KB Output is correct
14 Correct 1 ms 6492 KB Output is correct
15 Correct 1 ms 6616 KB Output is correct
16 Correct 1 ms 6492 KB Output is correct
17 Correct 1 ms 6516 KB Output is correct
18 Correct 1 ms 6492 KB Output is correct

Subtask #3
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6488 KB Output is correct
2 Correct 1 ms 6644 KB Output is correct
3 Correct 1 ms 6492 KB Output is correct
4 Correct 1 ms 6620 KB Output is correct
5 Correct 1 ms 6492 KB Output is correct
6 Correct 1 ms 6492 KB Output is correct
7 Correct 1 ms 6492 KB Output is correct
8 Correct 1 ms 6492 KB Output is correct
9 Correct 1 ms 6492 KB Output is correct
10 Correct 1 ms 6492 KB Output is correct
11 Correct 1 ms 6488 KB Output is correct
12 Correct 1 ms 6492 KB Output is correct
13 Correct 1 ms 6492 KB Output is correct
14 Correct 1 ms 6492 KB Output is correct
15 Correct 1 ms 6616 KB Output is correct
16 Correct 1 ms 6492 KB Output is correct
17 Correct 1 ms 6516 KB Output is correct
18 Correct 1 ms 6492 KB Output is correct
19 Correct 1 ms 6744 KB Output is correct
20 Correct 1 ms 6492 KB Output is correct
21 Correct 2 ms 6624 KB Output is correct
22 Correct 1 ms 6492 KB Output is correct
23 Correct 1 ms 6492 KB Output is correct
24 Correct 1 ms 6492 KB Output is correct
25 Correct 1 ms 6492 KB Output is correct
26 Correct 2 ms 6492 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 143 ms 17524 KB Output is correct
2 Correct 140 ms 17736 KB Output is correct
3 Correct 147 ms 16824 KB Output is correct
4 Correct 148 ms 17080 KB Output is correct
5 Correct 67 ms 15452 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 35 ms 8916 KB Output is correct
2 Correct 33 ms 9380 KB Output is correct
3 Correct 34 ms 8940 KB Output is correct
4 Correct 19 ms 8404 KB Output is correct
5 Correct 1 ms 6492 KB Output is correct
6 Correct 16 ms 8144 KB Output is correct
7 Correct 26 ms 8656 KB Output is correct

Subtask #6
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 74 ms 12244 KB Output is correct
2 Correct 77 ms 12412 KB Output is correct
3 Correct 159 ms 17268 KB Output is correct
4 Correct 71 ms 15568 KB Output is correct
5 Correct 42 ms 10940 KB Output is correct
6 Correct 70 ms 16080 KB Output is correct
7 Correct 80 ms 15556 KB Output is correct
8 Correct 58 ms 11228 KB Output is correct

Subtask #7
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6488 KB Output is correct
2 Correct 1 ms 6644 KB Output is correct
3 Correct 1 ms 6492 KB Output is correct
4 Correct 1 ms 6620 KB Output is correct
5 Correct 1 ms 6492 KB Output is correct
6 Correct 1 ms 6492 KB Output is correct
7 Correct 1 ms 6492 KB Output is correct
8 Correct 1 ms 6492 KB Output is correct
9 Correct 1 ms 6492 KB Output is correct
10 Correct 1 ms 6492 KB Output is correct
11 Correct 1 ms 6488 KB Output is correct
12 Correct 1 ms 6492 KB Output is correct
13 Correct 1 ms 6492 KB Output is correct
14 Correct 1 ms 6492 KB Output is correct
15 Correct 1 ms 6616 KB Output is correct
16 Correct 1 ms 6492 KB Output is correct
17 Correct 1 ms 6516 KB Output is correct
18 Correct 1 ms 6492 KB Output is correct
19 Correct 1 ms 6744 KB Output is correct
20 Correct 1 ms 6492 KB Output is correct
21 Correct 2 ms 6624 KB Output is correct
22 Correct 1 ms 6492 KB Output is correct
23 Correct 1 ms 6492 KB Output is correct
24 Correct 1 ms 6492 KB Output is correct
25 Correct 1 ms 6492 KB Output is correct
26 Correct 2 ms 6492 KB Output is correct
27 Correct 143 ms 17524 KB Output is correct
28 Correct 140 ms 17736 KB Output is correct
29 Correct 147 ms 16824 KB Output is correct
30 Correct 148 ms 17080 KB Output is correct
31 Correct 67 ms 15452 KB Output is correct
32 Correct 35 ms 8916 KB Output is correct
33 Correct 33 ms 9380 KB Output is correct
34 Correct 34 ms 8940 KB Output is correct
35 Correct 19 ms 8404 KB Output is correct
36 Correct 1 ms 6492 KB Output is correct
37 Correct 16 ms 8144 KB Output is correct
38 Correct 26 ms 8656 KB Output is correct
39 Correct 74 ms 12244 KB Output is correct
40 Correct 77 ms 12412 KB Output is correct
41 Correct 159 ms 17268 KB Output is correct
42 Correct 71 ms 15568 KB Output is correct
43 Correct 42 ms 10940 KB Output is correct
44 Correct 70 ms 16080 KB Output is correct
45 Correct 80 ms 15556 KB Output is correct
46 Correct 58 ms 11228 KB Output is correct
47 Correct 71 ms 13252 KB Output is correct
48 Correct 73 ms 12656 KB Output is correct
49 Correct 163 ms 18848 KB Output is correct
50 Correct 66 ms 16584 KB Output is correct
51 Correct 59 ms 11720 KB Output is correct
52 Correct 88 ms 15300 KB Output is correct
53 Correct 72 ms 16068 KB Output is correct
54 Correct 77 ms 16064 KB Output is correct
55 Correct 119 ms 16824 KB Output is correct