Submission #345796

#	Time	Username	Problem	Language	Result	Execution time	Memory
345796		Kevin_Zhang_TW	Dancing Elephants (IOI11_elephants)	C++17	26 / 100	9088 ms	3692 KiB

elephants

#include "elephants.h"
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
#define pb emplace_back
#define AI(i) begin(i), end(i)
template<class T> bool chmin(T &a, T b) { return b < a ? (a = b, true) : false; }
template<class T> bool chmax(T &a, T b) { return a < b ? (a = b, true) : false; }
#ifdef KEV
#define DE(args...) kout("[ " + string(#args) + " ] = ", args)
void kout() { cerr << endl; }
template<class T, class ...U> void kout(T a, U ...b) { cerr << a << ' ', kout(b...); }
template<class T> void debug(T L, T R) { while (L != R) cerr << *L << " \n"[next(L) == R], ++L; }
#else
#define DE(...) 0
#define debug(...) 0
#endif
const int MAX_N = 300010;
const int inf = 1e9 + 7;
int n, x[MAX_N], len, st[MAX_N];
map<int,int> cnt;

void init(int N, int L, int X[]) {
	n = N, len = L;
	copy(X, X+N, x);
	for (int i = 0;i < N;++i) ++cnt[ X[i] ];
}

int update(int i, int y) {
	if (--cnt[x[i]] == 0) cnt.erase(x[i]);
	++cnt[x[i] = y];
	int res = 0, lst = -inf;
	for (auto [x, _] : cnt)
		if (x - len > lst)
			++res, lst = x;
	return res;
}

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