Submission #1194978

#	Time	Username	Problem	Language	Result	Execution time	Memory
1194978		Valters07	Worm Worries (BOI18_worm)	C++20	32 / 100	8 ms	616 KiB

worm

#include <bits/stdc++.h>
#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx2,bmi,bmi2,popcnt,lzcnt,tune=native")
#define fio ios_base::sync_with_stdio(0);cin.tie(0);
#define ll long long
#define ld long double
#define en exit(0);
#define pb push_back
#define fi first
#define se second
using namespace std;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
const ld gold = (3.0 - sqrt(5)) / 2.0;
pair<int,int> dd[] = {{0, 1}, {0, -1}, {1, 0}, {-1, 0}};
map<array<int, 3>, int> mp;
int n, m, k, q;
int ask(int x, int y = 1, int z = 1)
{
    if(min({x, y, z}) < 1 || x > n || y > m || z > k)
        return 0;
    array<int, 3> tmp = {x, y, z};
    if(mp.count(tmp))
        return mp[tmp];
    cout << "? " << x << " " << y << " " << z << endl;
    int h;
    cin >> h;
    assert(q-- != 0);
    if(h == -1)
        exit(0);
    return mp[tmp] = h;
}
void guess(int x, int y = 1, int z = 1)
{
    cout << "! " << x << " " << y << " " << z << endl;
}
bool is(int x, int y)
{
    int cur = ask(x, y), mx = -1, t = -1;
    for(int d = 0;d < 4;d++)
    {
        int nwx = x + dd[d].fi, nwy = y + dd[d].se;
        if(ask(nwx, nwy) > mx)
        {
            mx = ask(nwx, nwy);
            t = d;
        }
    }
    return (cur >= mx);
}
int main()
{
    fio
//    ifstream cin("in.in");
    cin >> n >> m >> k >> q;
    if(max(m, k) == 1)
    {
        int l = 1, r = n;
        int lpos = 1 + floor(n * gold), rpos = n - floor(n * gold);
        while(l + 5 <= r)
        {
            int lval = ask(lpos), rval = ask(rpos);
            if(lval < rval)
            {
                l = lpos;
                lpos = rpos;
                int sz = r - l + 1;
                rpos = r - floor(sz * gold);
            }
            else
            {
                r = rpos;
                rpos = lpos;
                int sz = r - l + 1;
                lpos = l + floor(sz * gold);
            }
        }
        int mxpos = l;
        for(int i = l;i <= r;i++)
            if(ask(i) > ask(mxpos))
                mxpos = i;
        guess(mxpos);
    }
    else if(k == 1)
    {
        int ln = 1, rn = n, lm = 1, rm = m;
        while(1)
        {
            int midn = (ln + rn) / 2, mxpos = lm;
            for(int i = lm;i <= rm;i++)
                if(ask(midn, i) > ask(midn, mxpos))
                    mxpos = i;
            int mxval = ask(midn, mxpos), lft = ask(midn - 1, mxpos);
            if(lft > mxval)
                rn = midn;
            else
            {
                int rgt = ask(midn + 1, mxpos);
                if(rgt > mxval)
                    ln = midn + 1;
                else
                {
                    guess(midn, mxpos);
                    break;
                }
            }
            ///
            int midm = (lm + rm) / 2;
            mxpos = ln;
            for(int i = ln;i <= rn;i++)
                if(ask(i, midm) > ask(mxpos, midm))
                    mxpos = i;
            mxval = ask(mxpos, midm);
            lft = ask(mxpos, midm - 1);
            if(lft > mxval)
                rm = midm;
            else
            {
                int rgt = ask(mxpos, midm + 1);
                if(rgt > mxval)
                    lm = midm + 1;
                else
                {
                    guess(mxpos, midm);
                    break;
                }
            }
        }
    }
    return 0;
}

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