Submission #785204

#	Time	Username	Problem	Language	Result	Execution time	Memory
785204		christinelynn	Global Warming (CEOI18_glo)	C++17	0 / 100	148 ms	15900 KiB

glo

#include <bits/stdc++.h>
using namespace std;
 
#define v          vector
#define int        long long
#define all(a)     (a).begin(), (a).end()
#define pb         push_back
#define mk         make_pair
#define pii        pair<int, int>
#define ff         first
#define ss         second
#define inp_v(vec) for (auto &i : vec) cin >> i;
#define prt_v(vec) for (auto i : vec) cout << i << endl;
#define MS(x)     memset(x, 0, sizeof(x))
#define gcd(a,b)   __gcd(a, b);
#define lcm(a,b)   (a*(b/gcd(a,b)))
#define lb         lower_bound
bool chmin(int &a, int b){return b<a?a=b, true:false;}
bool chmax(int &a, int b){return b>a?a=b, true:false;}
const int maxn=2e5+5;
int dp[maxn], A[maxn];
signed main(){
    ios_base::sync_with_stdio(false); cin.tie(0);
    int N, x;cin>>N>>x;
    for(int i=1;i<=N;i++)cin>>A[i];
    if(!x){
        multiset<pair<int, int>>st;
        dp[N]=1;
        st.insert({A[N], N});
        int ans=1;
        for(int i=N-1;i>=1;i--){
            auto it=st.upper_bound({A[i], maxn});
            if(it==st.end())dp[i]=1;
            else{
                dp[i]=dp[(*it).second]+1;
            }     
            ans=max(ans, dp[i]);
            st.insert({A[i], i});
        }
        cout<<ans<<endl;
    }
    return 0;
}

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