Submission #246315

#	Time	Username	Problem	Language	Result	Execution time	Memory
246315		Sorting	Global Warming (CEOI18_glo)	C++14	28 / 100	2085 ms	1144 KiB

glo

#include <bits/stdc++.h>

using namespace std;

const int k_N = 2e5 + 3;
const int k_Inf = 1e9 + 3;

int n, x;
int t[k_N];

int get_lis(){
    vector<int> dp;
    dp.push_back({-k_Inf});

    for(int i = 0; i < n; ++i){
        auto it = lower_bound(dp.begin(), dp.end(), t[i]);
        if(it == dp.end())
            dp.push_back(t[i]);
        else
            dp[it - dp.begin()] = t[i];    
    }

    return (int)dp.size() - 1;
}

int main(){
    ios::sync_with_stdio(false);
    cin.tie(NULL);

    cin >> n >> x;
    for(int i = 0; i < n; ++i)
        cin >> t[i];

    int ans = 0, l = 0;
    for(int r = l; r < n; ++r){
        int d = -x;
        for(int i = l; i <= r; ++i)
            t[i] += d;
        ans = max(get_lis(), ans);
        for(int i = l; i <= r; ++i)
            t[i] -= d;
    }

    cout << ans << "\n";
}

• 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