Submission #395804

#	Time	Username	Problem	Language	Result	Execution time	Memory
395804		Pichon5	Global Warming (CEOI18_glo)	C++17	28 / 100	2079 ms	2028 KiB

glo

#include<bits/stdc++.h>
#include <chrono>
#include <thread>
#define lcm(a,b) (a/__gcd(a,b))*b
#define fast ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
#define ll long long int
#define vi vector<int>
#define vll vector<ll>
#define pb push_back
#define F first
#define S second
#define mp make_pair
//salida rapida "\n"
//DECIMALES fixed<<sp(n)<<x<<endl;
//gcd(a,b)= ax + by
//lCB x&-x
//set.erase(it) - ersases the element present at the required index//auto it = s.find(element)
//set.find(element) - iterator pointing to the given element if it is present else return pointer pointing to set.end()
//set.lower_bound(element) - iterator pointing to element greater than or equal to the given element
//set.upper_bound(element) - iterator pointing to element greater than the given element
// | ^
//__builtin_popcount(x)
using namespace std;

#pragma GCC target ("avx2")
#pragma GCC optimization ("O3")
#pragma GCC optimization ("unroll-loops")
const ll inf=1e16;
const ll ma=1e5;
ll a[ma+5];
vll d;
int main()
{
    fast
    int n,k;
    cin>>n>>k;
    for(int i=0;i<n;i++){
        cin>>a[i];
    }
    int res=0;
    for(int j=n;j>=0;j--){
            a[j]+=k;
            d.assign(n+1,inf);
                d[0]=-inf;
               for(int i=0;i<n;i++){
                int b=1,e=n;
                while(b<=e){
                    int mid=(b+e)/2;
                    if(a[i]<d[mid] && a[i]>d[mid-1]){
                    d[mid]=a[i];
                    break;
                }
                if(d[mid]>a[i]){
                    e=mid-1;
                }else{
                    b=mid+1;
                }
            }
            for(int i=1;i<=n;i++){
                if(d[i]!=inf){
                    res=max(res,i);
                }
            }
        }
    }
    cout<<res<<endl;
    return 0;
}
//409336628

Compilation message (stderr)

glo.cpp:26: warning: ignoring #pragma GCC optimization [-Wunknown-pragmas]
   26 | #pragma GCC optimization ("O3")
      | 
glo.cpp:27: warning: ignoring #pragma GCC optimization [-Wunknown-pragmas]
   27 | #pragma GCC optimization ("unroll-loops")
      |

• Subtask 1: 5 / 5
• Subtask 2: 10 / 10
• Subtask 3: 13 / 13
• Subtask 4: 0 / 10
• Subtask 5: 0 / 20
• Subtask 6: 0 / 17
• Subtask 7: 0 / 25