Submission #311238

#	Time	Username	Problem	Language	Result	Execution time	Memory
311238		OttoTheDino	Worm Worries (BOI18_worm)	C++17	0 / 100	1451 ms	384 KiB

worm

#include <bits/stdc++.h>
using namespace std;

#define rep(n)      for (int i = 0; i < n; ++i)
#define rep2(n)     for (int j = 0; j < n; ++j)
#define mp          make_pair
#define pb          push_back
typedef long long ll;
typedef vector<int> vi;
typedef pair<int, int> ii;


array<int, 3> max_id (int i, int j1, int k1, int j2, int k2) {
    int ma = 0, cur, idj = j1, idk = k2;    
    for (int j = j1; j <= j2; ++j) {
        for (int k = k1; k <+ k2; ++k) {
            cout << "? " << i << " " << j << " " << k << "\n" << flush;
            cin >> cur;
            if (cur>ma) {
                ma = cur;
                idj = j, idk = k;
            }
        }
    }
    return {i, idj, idk};
}

int main() {    
    ios::sync_with_stdio(0);
    cin.tie(0);
    
    int n, m, k, q;
    cin >> n >> m >> k >> q;
  
    int lo = 1, hi = n;
    while (lo<hi) {
        int mid = (lo+hi)/2, l = 0, a = 0, r = 0;
        array<int, 3> id = max_id(mid, 1, 1, m, k);
        if (mid>1) {
            cout << "? " << id[0]-1 << " " << id[1] << " " << id[2] << "\n" << flush;
            cin >> l;
        }
        cout << "? " << id[0] << " " << id[1] << " " << id[2] << "\n" << flush;
        cin >> a;
        if (mid<n) {
            cout << "? " << id[0]+1 << " " << id[1] << " " << id[2] << "\n" << flush;
            cin >> r;
        }
        if (a>=l&&a>=r) {
            cout << "! " << id[0] << " " << id[1] << " " << id[2] << "\n" << flush;
            break;
        }
        else if (l>r) hi = mid-1;
        else lo = mid+1;
    }
       
    return 0;
}

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