Submission #1234733

#	Time	Username	Problem	Language	Result	Execution time	Memory
1234733		siewjh	Park (JOI17_park)	C++20	67 / 100	280 ms	600 KiB

park

#include "park.h"
#include <bits/stdc++.h>
using namespace std;
const int MAXN = 1400;
int Place[MAXN];
void Detect(int T, int N) {
	vector<int> st, oust, intr;
	for (int i = 1; i < N; i++) oust.push_back(i);
	intr.push_back(0);
	for (int i = 1; i < N; i++){
		if (st.empty()){
			st.push_back(oust.back()); oust.pop_back();
		}
		memset(Place, 0, sizeof(Place));
		for (int x : intr) Place[x] = 1;
		while(1){
			int curr = st.back();
			Place[curr] = 1;
			if (Ask(0, curr, Place)) break;
			int lo = 0, hi = oust.size() - 1, res;
			while (lo <= hi){
				int m = (lo + hi) >> 1;
				for (int i = 0; i <= m; i++) Place[oust[i]] = 1;
				if (Ask(0, curr, Place)){
					res = m; hi = m - 1;
				}
				else lo = m + 1;
				for (int i = 0; i <= m; i++) Place[oust[i]] = 0;
			}
			st.push_back(oust[res]);
			oust.erase(oust.begin() + res);
		}
		int curr = st.back(); st.pop_back();
		for (int x : intr) Place[x] = 0;
		int lo = 0, hi = intr.size() - 1, res;
		while (lo <= hi){
			int m = (lo + hi) >> 1;
			for (int i = 0; i <= m; i++) Place[intr[i]] = 1;
			if (Ask(0, curr, Place)){
				res = m; hi = m - 1;
			}
			else lo = m + 1;
			for (int i = 0; i <= m; i++) Place[intr[i]] = 0;
		}
		Answer(min(intr[res], curr), max(intr[res], curr)); intr.push_back(curr);
	}
}

• Subtask 1: 0 / 10
• Subtask 2: 10 / 10
• Subtask 3: 27 / 27
• Subtask 4: 30 / 30
• Subtask 5: 0 / 23