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Submission #1117497

# Submission time Handle Problem Language Result Execution time Memory
1117497 2024-11-23T19:32:03 Z KALARRY Global Warming (CEOI18_glo) C++14
100 / 100
 60 ms 7056 KB 
//chockolateman

#include<bits/stdc++.h>

using namespace std;

const long long INF = 1e15;

long long N,x,t[200005],suff[200005],dp[200005]; //suff[i] = LIC of the suff i starting with at least t[i-1] - d + 1

int main()
{
    scanf("%lld%lld",&N,&x);
    for(long long i = 1 ; i <= N ; i++)
        scanf("%lld",&t[i]);
    dp[0] = INF;
    for(long long i = 1 ; i <= N ; i++)
        dp[i] = - INF;
    for(long long i = N ; i >= 1 ; i--)
    {
        long long pos = 0;
        for(long long b = N ; b >= 1 ; b/=2)
            while(pos + b <= N && dp[pos+b] > t[i])
                pos += b;
        dp[pos+1] = max(dp[pos+1],t[i]);
        pos = 0;
        for(long long b = N ; b >= 1 ; b/=2)
            while(pos + b <= N && dp[pos+b] > t[i-1] - x)
                pos += b;
        suff[i] = pos;
    }
    long long ans = 0;
    for(long long i = 1 ; i <= N ; i++)
        dp[i] = INF;
    dp[0] = 0;
    for(long long i = 1 ; i <= N ; i++)
    {
        long long pos = lower_bound(dp,dp+N+1,t[i]) - dp - 1;
        dp[pos+1] = min(dp[pos+1],t[i]);
        ans = max(ans,pos+1 + suff[i+1]);
    }
    printf("%lld\n",ans);
    return 0;
}

Compilation message

glo.cpp: In function 'int main()':
glo.cpp:13:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   13 |     scanf("%lld%lld",&N,&x);
      |     ~~~~~^~~~~~~~~~~~~~~~~~
glo.cpp:15:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   15 |         scanf("%lld",&t[i]);
      |         ~~~~~^~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4432 KB Output is correct
2 Correct 1 ms 4432 KB Output is correct
3 Correct 1 ms 4448 KB Output is correct
4 Correct 1 ms 4432 KB Output is correct
5 Correct 1 ms 4432 KB Output is correct
6 Correct 1 ms 4556 KB Output is correct
7 Correct 2 ms 4444 KB Output is correct
8 Correct 2 ms 4432 KB Output is correct
9 Correct 2 ms 4432 KB Output is correct
10 Correct 1 ms 4432 KB Output is correct
11 Correct 2 ms 4432 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4432 KB Output is correct
2 Correct 1 ms 4432 KB Output is correct
3 Correct 1 ms 4448 KB Output is correct
4 Correct 1 ms 4432 KB Output is correct
5 Correct 1 ms 4432 KB Output is correct
6 Correct 1 ms 4556 KB Output is correct
7 Correct 2 ms 4444 KB Output is correct
8 Correct 2 ms 4432 KB Output is correct
9 Correct 2 ms 4432 KB Output is correct
10 Correct 1 ms 4432 KB Output is correct
11 Correct 2 ms 4432 KB Output is correct
12 Correct 1 ms 4432 KB Output is correct
13 Correct 1 ms 4432 KB Output is correct
14 Correct 2 ms 4432 KB Output is correct
15 Correct 1 ms 4444 KB Output is correct
16 Correct 2 ms 4432 KB Output is correct
17 Correct 1 ms 4432 KB Output is correct
18 Correct 1 ms 4432 KB Output is correct

Subtask #3
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4432 KB Output is correct
2 Correct 1 ms 4432 KB Output is correct
3 Correct 1 ms 4448 KB Output is correct
4 Correct 1 ms 4432 KB Output is correct
5 Correct 1 ms 4432 KB Output is correct
6 Correct 1 ms 4556 KB Output is correct
7 Correct 2 ms 4444 KB Output is correct
8 Correct 2 ms 4432 KB Output is correct
9 Correct 2 ms 4432 KB Output is correct
10 Correct 1 ms 4432 KB Output is correct
11 Correct 2 ms 4432 KB Output is correct
12 Correct 1 ms 4432 KB Output is correct
13 Correct 1 ms 4432 KB Output is correct
14 Correct 2 ms 4432 KB Output is correct
15 Correct 1 ms 4444 KB Output is correct
16 Correct 2 ms 4432 KB Output is correct
17 Correct 1 ms 4432 KB Output is correct
18 Correct 1 ms 4432 KB Output is correct
19 Correct 1 ms 4432 KB Output is correct
20 Correct 1 ms 4432 KB Output is correct
21 Correct 2 ms 4432 KB Output is correct
22 Correct 2 ms 4432 KB Output is correct
23 Correct 1 ms 4432 KB Output is correct
24 Correct 1 ms 4432 KB Output is correct
25 Correct 2 ms 4432 KB Output is correct
26 Correct 1 ms 4432 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 50 ms 6992 KB Output is correct
2 Correct 50 ms 7056 KB Output is correct
3 Correct 60 ms 6992 KB Output is correct
4 Correct 54 ms 7056 KB Output is correct
5 Correct 38 ms 6288 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 5200 KB Output is correct
2 Correct 12 ms 5200 KB Output is correct
3 Correct 12 ms 5200 KB Output is correct
4 Correct 10 ms 5020 KB Output is correct
5 Correct 1 ms 4432 KB Output is correct
6 Correct 10 ms 4908 KB Output is correct
7 Correct 10 ms 5200 KB Output is correct

Subtask #6
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 30 ms 5680 KB Output is correct
2 Correct 22 ms 5456 KB Output is correct
3 Correct 46 ms 6832 KB Output is correct
4 Correct 36 ms 6224 KB Output is correct
5 Correct 19 ms 5200 KB Output is correct
6 Correct 33 ms 6224 KB Output is correct
7 Correct 36 ms 6736 KB Output is correct
8 Correct 20 ms 5712 KB Output is correct

Subtask #7
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4432 KB Output is correct
2 Correct 1 ms 4432 KB Output is correct
3 Correct 1 ms 4448 KB Output is correct
4 Correct 1 ms 4432 KB Output is correct
5 Correct 1 ms 4432 KB Output is correct
6 Correct 1 ms 4556 KB Output is correct
7 Correct 2 ms 4444 KB Output is correct
8 Correct 2 ms 4432 KB Output is correct
9 Correct 2 ms 4432 KB Output is correct
10 Correct 1 ms 4432 KB Output is correct
11 Correct 2 ms 4432 KB Output is correct
12 Correct 1 ms 4432 KB Output is correct
13 Correct 1 ms 4432 KB Output is correct
14 Correct 2 ms 4432 KB Output is correct
15 Correct 1 ms 4444 KB Output is correct
16 Correct 2 ms 4432 KB Output is correct
17 Correct 1 ms 4432 KB Output is correct
18 Correct 1 ms 4432 KB Output is correct
19 Correct 1 ms 4432 KB Output is correct
20 Correct 1 ms 4432 KB Output is correct
21 Correct 2 ms 4432 KB Output is correct
22 Correct 2 ms 4432 KB Output is correct
23 Correct 1 ms 4432 KB Output is correct
24 Correct 1 ms 4432 KB Output is correct
25 Correct 2 ms 4432 KB Output is correct
26 Correct 1 ms 4432 KB Output is correct
27 Correct 50 ms 6992 KB Output is correct
28 Correct 50 ms 7056 KB Output is correct
29 Correct 60 ms 6992 KB Output is correct
30 Correct 54 ms 7056 KB Output is correct
31 Correct 38 ms 6288 KB Output is correct
32 Correct 13 ms 5200 KB Output is correct
33 Correct 12 ms 5200 KB Output is correct
34 Correct 12 ms 5200 KB Output is correct
35 Correct 10 ms 5020 KB Output is correct
36 Correct 1 ms 4432 KB Output is correct
37 Correct 10 ms 4908 KB Output is correct
38 Correct 10 ms 5200 KB Output is correct
39 Correct 30 ms 5680 KB Output is correct
40 Correct 22 ms 5456 KB Output is correct
41 Correct 46 ms 6832 KB Output is correct
42 Correct 36 ms 6224 KB Output is correct
43 Correct 19 ms 5200 KB Output is correct
44 Correct 33 ms 6224 KB Output is correct
45 Correct 36 ms 6736 KB Output is correct
46 Correct 20 ms 5712 KB Output is correct
47 Correct 24 ms 5552 KB Output is correct
48 Correct 24 ms 5472 KB Output is correct
49 Correct 49 ms 6992 KB Output is correct
50 Correct 38 ms 6224 KB Output is correct
51 Correct 33 ms 5456 KB Output is correct
52 Correct 38 ms 6192 KB Output is correct
53 Correct 34 ms 6224 KB Output is correct
54 Correct 37 ms 6992 KB Output is correct
55 Correct 46 ms 6992 KB Output is correct