Submission #505503

#	Time	Username	Problem	Language	Result	Execution time	Memory
505503		wiwiho	Worm Worries (BOI18_worm)	C++14	10 / 100	2 ms	308 KiB

worm

#include <bits/stdc++.h>
 
#define eb emplace_back
#define mt make_tuple
#define mp make_pair
#define F first
#define S second
#define printv(a, b) { \
    for(auto pv : a) b << pv << " "; \
    b << "\n"; \
}
 
using namespace std;
 
using pii = pair<int, int>;
using tiii = tuple<int, int, int>;
 
const int MAX = 1e9;
 
int n, m, k;
 
map<tiii, int> _qry;
int cnt = 0;
int query(int x, int y, int z){
    if(x <= 0 || x > n || y <= 0 || y > m || z <= 0 || z > k) return 0;
    if(_qry.find(mt(x, y, z)) == _qry.end()){
        cout << "? " << x << " " << y << " " << z << "\n" << flush;
        int r = 0;
        cin >> r;
        if(r == -1) exit(0);
        _qry[mt(x, y, z)] = r;
        cnt++;
    }
    return _qry[mt(x, y, z)];
}
 
int findmx1(int y, int z){
    int x = -1, mx = -1;
    for(int i = 1; i <= n; i++){
        int tmp = query(i, y, z);
        if(tmp > mx) mx = tmp, x = i;
    }
    return x;
}
 
pii findmx2(int z){
    int x = -1, y = -1, mx = -1;
    for(int i = 1; i <= n; i++){
        for(int j = 1; j <= m; j++){
            int tmp = query(i, j, z);
            if(tmp > mx) mx = tmp, x = i, y = j;
        }
    }
    return mp(x, y);
}
 
int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);
 
    int q;
    cin >> n >> m >> k >> q;
 
    int x = -1, y = 1, z = 1;

    int l = 1, r = n;
    while(r - l > 3){
        int m1 = (l * 2 + r) / 3;
        int m2 = (l + r * 2) / 3;
        if(query(m1, y, z) > query(m2, y, z)) r = m2;
        else l = m1;
    }

    int mx = 0;
    for(int i = l; i <= r; i++){
        int tmp = query(i, y, z);
        if(tmp > mx) mx = tmp, x = i;
    }
 
    cout << "! " << x << " " << y << " " << z << "\n" << flush;
 
    return 0;
}

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