Submission #986173

#	Time	Username	Problem	Language	Result	Execution time	Memory
986173		ByeWorld	Worm Worries (BOI18_worm)	C++14	0 / 100	1 ms	344 KiB

worm

#include <bits/stdc++.h>
#define ll 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.find(ipii(pii(a, b), c)) != ma.end()) 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;
	int le = -1, ri = -1;
	while(r-l+1 >= 4){
		len = r-l+1;
		if(mid1==-1) mid1 = l+len*3819/10000;
		if(le==-1) le = que(mid1, 1, 1);
		if(mid2==-1) mid2 = l+(len*6180+9999)/10000;
		if(ri==-1) ri = que(mid2, 1, 1);

		if(le < ri){
			l = mid1; le = ri; mid1 = mid2;
			mid2 = -1; ri = -1;
		} else {
			r = mid2; ri = le; mid2 = mid1;
			mid1 = -1; le = -1;
		}
	}
	vector <int> vec; vec.pb(0);
	for(int i=l; i<=r; i++) vec.pb(que(i, 1, 1));
	vec.pb(0);
	int ans = -1;
	for(int i=1; i<=(int)vec.size()-2; i++){
		if(vec[i] >= max(vec[i-1], vec[i+1])){
			ans = i+l-1; break;
		}
	}
	// assert(ans != -1);
	cout << "! " << ans << " 1 1" << endl;
}

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