Submission #391207

#	Time	Username	Problem	Language	Result	Execution time	Memory
391207		rocks03	Dancing Elephants (IOI11_elephants)	C++14	50 / 100	9012 ms	1740 KiB

elephants

#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define pii pair<int, int>
#define pll pair<ll, ll>
#define ff first
#define ss second
#define pb push_back
#define SZ(x) ((int)(x).size())
#define all(x) x.begin(), x.end()
#define debug(x) cout << #x << ": " << x << " "
#define nl cout << "\n"
#define rep(i, a, b) for(int i = (a); i < (b); i++)
#define per(i, a, b) for(int i = (a); i >= (b); i--)
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

int *a, N, L;
vector<int> st;
void init(int n, int l, int X[]){
    a = X, N = n, L = l;
    rep(i, 0, n) st.pb(X[i]);
}

int update(int i, int y){
    st.erase(find(all(st), a[i]));
    a[i] = y;
    st.insert(upper_bound(all(st), a[i]), a[i]);
    int ans = 1, p = st[0];
    rep(i, 1, N){
        if(p + L < st[i]){
            p = st[i], ans++;
        }
    }
    return ans;
}

• Subtask 1: 10 / 10
• Subtask 2: 16 / 16
• Subtask 3: 24 / 24
• Subtask 4: 0 / 47
• Subtask 5: 0 / 3