oj.uz

Submission #494173

# Submission time Handle Problem Language Result Execution time Memory
494173 2021-12-14T14:53:53 Z radal Global Warming (CEOI18_glo) C++14
100 / 100
 73 ms 5400 KB 
#include <bits/stdc++.h>
#pragma GCC optimize("O2")
#pragma GCC target("avx2,fma")
#define rep(i,l,r) for (int i = l; i < r; i++)
#define repr(i,r,l) for (int i = r; i >= l; i--)
#define X first
#define Y second
#define pb push_back
#define endl '\n'
#define debug(x) cerr << #x << " : " << x << endl;
using namespace std;
typedef long long ll;
typedef pair<int,int> pll;
const long long int N = 2e5+20,mod = 1e9+7,inf = 1e9,sq = 400;
inline int mkay(int a,int b){
    if (a+b >= mod) return a+b-mod;
    if (a+b < 0) return a+b+mod;
    return a+b;
}
inline int poww(int n,int k){
    int c = 1;
    while (k){
        if (k&1) c = (1ll*c*n)%mod;
        n = (1ll*n*n)%mod;
        k >>= 1;
    }
    return c;
}
int pre[N],dp[N],a[N],suf[N];
int main(){
    ios :: sync_with_stdio(0); cin.tie(0);
    memset(dp,63,sizeof dp);
    int n,x;
    cin >> n >> x;
    rep(i,1,n+1) cin >> a[i];
    dp[0] = 0;
    rep(i,1,n+1){
        int ind = lower_bound(dp,dp+n+1,a[i])-dp;
        pre[i] = ind;
        dp[ind] = a[i];
    }
    memset(dp,0,sizeof dp);
    dp[0] = -inf*2-2;
    int ans = 0;
    repr(i,n,1){
        int ind = lower_bound(dp,dp+n+1,-a[i])-dp;
        suf[i] = ind;
        ans = max(ans,suf[i]+pre[i]-1);
        ind = lower_bound(dp,dp+n+1,-a[i]-x)-dp;
        dp[ind] = -a[i]-x;
    }
    cout << ans;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1100 KB Output is correct
2 Correct 1 ms 1100 KB Output is correct
3 Correct 1 ms 1100 KB Output is correct
4 Correct 2 ms 1100 KB Output is correct
5 Correct 1 ms 1100 KB Output is correct
6 Correct 1 ms 1100 KB Output is correct
7 Correct 1 ms 1100 KB Output is correct
8 Correct 1 ms 1100 KB Output is correct
9 Correct 1 ms 1100 KB Output is correct
10 Correct 1 ms 1100 KB Output is correct
11 Correct 1 ms 1100 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1100 KB Output is correct
2 Correct 1 ms 1100 KB Output is correct
3 Correct 1 ms 1100 KB Output is correct
4 Correct 2 ms 1100 KB Output is correct
5 Correct 1 ms 1100 KB Output is correct
6 Correct 1 ms 1100 KB Output is correct
7 Correct 1 ms 1100 KB Output is correct
8 Correct 1 ms 1100 KB Output is correct
9 Correct 1 ms 1100 KB Output is correct
10 Correct 1 ms 1100 KB Output is correct
11 Correct 1 ms 1100 KB Output is correct
12 Correct 1 ms 1100 KB Output is correct
13 Correct 1 ms 1100 KB Output is correct
14 Correct 1 ms 1100 KB Output is correct
15 Correct 1 ms 1112 KB Output is correct
16 Correct 1 ms 1112 KB Output is correct
17 Correct 1 ms 1100 KB Output is correct
18 Correct 1 ms 1100 KB Output is correct

Subtask #3
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1100 KB Output is correct
2 Correct 1 ms 1100 KB Output is correct
3 Correct 1 ms 1100 KB Output is correct
4 Correct 2 ms 1100 KB Output is correct
5 Correct 1 ms 1100 KB Output is correct
6 Correct 1 ms 1100 KB Output is correct
7 Correct 1 ms 1100 KB Output is correct
8 Correct 1 ms 1100 KB Output is correct
9 Correct 1 ms 1100 KB Output is correct
10 Correct 1 ms 1100 KB Output is correct
11 Correct 1 ms 1100 KB Output is correct
12 Correct 1 ms 1100 KB Output is correct
13 Correct 1 ms 1100 KB Output is correct
14 Correct 1 ms 1100 KB Output is correct
15 Correct 1 ms 1112 KB Output is correct
16 Correct 1 ms 1112 KB Output is correct
17 Correct 1 ms 1100 KB Output is correct
18 Correct 1 ms 1100 KB Output is correct
19 Correct 1 ms 1100 KB Output is correct
20 Correct 1 ms 1100 KB Output is correct
21 Correct 1 ms 1100 KB Output is correct
22 Correct 1 ms 1100 KB Output is correct
23 Correct 1 ms 1100 KB Output is correct
24 Correct 1 ms 1100 KB Output is correct
25 Correct 1 ms 1100 KB Output is correct
26 Correct 1 ms 1100 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 62 ms 5232 KB Output is correct
2 Correct 73 ms 5248 KB Output is correct
3 Correct 69 ms 5240 KB Output is correct
4 Correct 63 ms 5392 KB Output is correct
5 Correct 49 ms 4468 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 2124 KB Output is correct
2 Correct 19 ms 2128 KB Output is correct
3 Correct 15 ms 2132 KB Output is correct
4 Correct 12 ms 1996 KB Output is correct
5 Correct 1 ms 1100 KB Output is correct
6 Correct 12 ms 1868 KB Output is correct
7 Correct 13 ms 2124 KB Output is correct

Subtask #6
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 32 ms 3140 KB Output is correct
2 Correct 26 ms 3272 KB Output is correct
3 Correct 56 ms 5240 KB Output is correct
4 Correct 46 ms 4528 KB Output is correct
5 Correct 25 ms 2824 KB Output is correct
6 Correct 38 ms 4456 KB Output is correct
7 Correct 44 ms 5152 KB Output is correct
8 Correct 23 ms 3140 KB Output is correct

Subtask #7
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1100 KB Output is correct
2 Correct 1 ms 1100 KB Output is correct
3 Correct 1 ms 1100 KB Output is correct
4 Correct 2 ms 1100 KB Output is correct
5 Correct 1 ms 1100 KB Output is correct
6 Correct 1 ms 1100 KB Output is correct
7 Correct 1 ms 1100 KB Output is correct
8 Correct 1 ms 1100 KB Output is correct
9 Correct 1 ms 1100 KB Output is correct
10 Correct 1 ms 1100 KB Output is correct
11 Correct 1 ms 1100 KB Output is correct
12 Correct 1 ms 1100 KB Output is correct
13 Correct 1 ms 1100 KB Output is correct
14 Correct 1 ms 1100 KB Output is correct
15 Correct 1 ms 1112 KB Output is correct
16 Correct 1 ms 1112 KB Output is correct
17 Correct 1 ms 1100 KB Output is correct
18 Correct 1 ms 1100 KB Output is correct
19 Correct 1 ms 1100 KB Output is correct
20 Correct 1 ms 1100 KB Output is correct
21 Correct 1 ms 1100 KB Output is correct
22 Correct 1 ms 1100 KB Output is correct
23 Correct 1 ms 1100 KB Output is correct
24 Correct 1 ms 1100 KB Output is correct
25 Correct 1 ms 1100 KB Output is correct
26 Correct 1 ms 1100 KB Output is correct
27 Correct 62 ms 5232 KB Output is correct
28 Correct 73 ms 5248 KB Output is correct
29 Correct 69 ms 5240 KB Output is correct
30 Correct 63 ms 5392 KB Output is correct
31 Correct 49 ms 4468 KB Output is correct
32 Correct 14 ms 2124 KB Output is correct
33 Correct 19 ms 2128 KB Output is correct
34 Correct 15 ms 2132 KB Output is correct
35 Correct 12 ms 1996 KB Output is correct
36 Correct 1 ms 1100 KB Output is correct
37 Correct 12 ms 1868 KB Output is correct
38 Correct 13 ms 2124 KB Output is correct
39 Correct 32 ms 3140 KB Output is correct
40 Correct 26 ms 3272 KB Output is correct
41 Correct 56 ms 5240 KB Output is correct
42 Correct 46 ms 4528 KB Output is correct
43 Correct 25 ms 2824 KB Output is correct
44 Correct 38 ms 4456 KB Output is correct
45 Correct 44 ms 5152 KB Output is correct
46 Correct 23 ms 3140 KB Output is correct
47 Correct 27 ms 3148 KB Output is correct
48 Correct 34 ms 3144 KB Output is correct
49 Correct 65 ms 5316 KB Output is correct
50 Correct 45 ms 4504 KB Output is correct
51 Correct 35 ms 3628 KB Output is correct
52 Correct 47 ms 4588 KB Output is correct
53 Correct 41 ms 4660 KB Output is correct
54 Correct 46 ms 5328 KB Output is correct
55 Correct 51 ms 5400 KB Output is correct