Submission #1305363

#	Time	Username	Problem	Language	Result	Execution time	Memory
1305363		Taxiradio	Global Warming (CEOI18_glo)	C++20	10 / 100	2095 ms	11400 KiB

glo

#include <bits/stdc++.h>
using namespace std;

#define int int64_t

int M = 10000000000;

int li(vector<int> a){
    int n = a.size();
    vector<int> c(n+1 , M);
    c[0] = -M;
    int ans = 0;
    for(int i = 0; i < n; i++){
        int j = lower_bound(c.begin() , c.end() , a[i])-c.begin();
        c[j] = a[i];
        ans = max(ans , j);
    }
    return ans;
}

int32_t main() {
    int n , x; cin >> n >> x;
    vector<int> a;
    for(int i = 0; i < n; i++){
        int b; cin >> b;
        a.push_back(b);
    }
    int ans = 0;
    for(int i = -x; i <= x; i++){
        vector<int> b;
        for(int j = 0; j < n; j++){
            b.push_back(max(a[j] , a[j]+i));
            b.push_back(min(a[j] , a[j]+i));
        }
        ans = max(ans , li(b));
    }
    cout << ans << endl;
}

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