Submission #986175

#	Time	Username	Problem	Language	Result	Execution time	Memory
986175		ByeWorld	Worm Worries (BOI18_worm)	C++14	32 / 100	1 ms	444 KiB

worm

#include <bits/stdc++.h>
#define ll long long
#define int long long
#define pb push_back
#define fi first
#define se second
#define lf (id<<1)
#define rg ((id<<1)|1)
#define md ((l+r)>>1)
#define ld long double
using namespace std;
typedef pair<int,int> pii;
typedef pair<pii,int> ipii;

vector <int> vx = {1, -1, 0, 0, 0, 0};
vector <int> vy = {0, 0, 1, -1, 0, 0};
vector <int> vz = {0, 0, 0, 0, 1, -1};

mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
int all, n, m, k, q;
int ansx=-1, ansy, ansz;
map <ipii, int> ma;

int que(int a, int b, int c){
	if(a<=0 || a>n || b<=0 || b>m || c<=0 || c>k) return 0;
	if(ma.count(ipii(pii(a, b), c)) != 0) return ma[ipii(pii(a, b), c)];
	if(all == q) assert(false);
	cout << "? " << a << ' ' << b << ' ' << c << endl;
	all++;
	int x; cin >> x; 
	ma[ipii(pii(a, b), c)] = x;
	return x;
}

signed main(){
	cin >> n >> m >> k >> q; 
	int len = n;
	int l=1, r=n, mid1=-1, mid2=-1;
	while(r-l+1 >= 4){
		len = r-l+1;
		if(mid1==-1) mid1 = l+0.382*len;
		if(mid2==-1) mid2 = l+0.618*len;
		if(mid1 >= mid2){
			mid1 = l+0.382*len;
			mid2 = l+0.618*len;
			if(mid1 >= mid2) break;
		}

		if(que(mid1, 1, 1) <= que(mid2, 1, 1)){
			l = mid1+1; mid1 = mid2; mid2 = -1;
		} else {
			r = mid2-1; mid2 = mid1; mid1 = -1;
		}
	}
	int ans = l;
	for(int i=l; i<=r; i++){
		if(que(i, 1, 1) >= max(que(i+1, 1, 1), que(i-1, 1, 1))){
			ans = i; break;
		}
	}
	// assert(ans != -1);
	cout << "! " << ans << " 1 1" << endl;
}

• Subtask 1: 10 / 10
• Subtask 2: 22 / 22
• Subtask 3: 0 / 12
• Subtask 4: 0 / 19
• Subtask 5: 0 / 14
• Subtask 6: 0 / 23