Submission #447777

#	Time	Username	Problem	Language	Result	Execution time	Memory
447777		dxz05	Dancing Elephants (IOI11_elephants)	C++14	26 / 100	9079 ms	1484 KiB

elephants

#pragma GCC optimize("Ofast")
#pragma GCC target("avx,avx2,fma")
#pragma GCC optimize("unroll-loops")

#include "elephants.h"
#include <bits/stdc++.h>

using namespace std;

const int MAXN = 2e5 + 3e2;

int N, L;
int X[MAXN], A[MAXN];
void init(int _N, int _L, int _X[]){
    N = _N;
    L = _L;
    for (int i = 0; i < N; i++) X[i] = _X[i];

    for (int i = 0; i < N; i++) A[i] = X[i];

    sort(A, A + N);

}

int update(int pos, int val){
    for (int i = 0; i < N; i++){
        if (A[i] == X[pos]) A[i] = val;
    }

    X[pos] = val;

    for (int i = 0; i < N - 1; i++){
        if (A[i] > A[i + 1]) swap(A[i], A[i + 1]);
    }

    for (int i = N - 1; i > 1; i--){
        if (A[i - 1] > A[i]) swap(A[i - 1], A[i]);
    }

    //for (int i = 0; i < N; i++) cerr << X[i] << ' '; cerr << endl;
    //for (int i = 0; i < N; i++) cerr << A[i] << ' '; cerr << endl << endl;

    int ans = 1, last = A[0];
    for (int i = 0; i < N; i++){
        if (A[i] - last > L){
            ans++;
            last = A[i];
        }
    }

    return ans;
}

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