Submission #733713

#	Time	Username	Problem	Language	Result	Execution time	Memory
733713		ByeWorld	Worm Worries (BOI18_worm)	C++14	10 / 100	1 ms	208 KiB

worm

#include <bits/stdc++.h>
#define fi first
#define se second
#define pb push_back
#define int long long
#define ll long long
using namespace std;
const int MAXN = 1e3+10;
const int LOG = 20;
const int SQRT = 4e3;
const int INF = 1e7;
typedef pair<int,int> pii;
typedef pair<int,pii> ipii;

int n, m, k, q;
int a[1010];

int ask(int x){
    cout << "? " << x << " 1 1" << endl;
    int ret; cin >> ret;
    return ret;
}
void ans(int x){
    cout << "! " << x << " 1 1" << endl;
}

void find(int l, int r){
    int len = r-l+1;
    int mid1 = -1; int mid2 = -1;
    int val1 = -1; int val2 = -1;
    while(r-l+1 >= 4){
        len = r-l+1;
        if(mid1 == -1) mid1 = l + len*3819/10000;
        if(mid2 == -1) mid2 = l + (len*618 + 999)/1000;
        if(val1 == -1) val1 = ask(mid1);
        if(val2 == -1) val2 = ask(mid2);

        if(val1 < val2){
            l = mid1; 
            mid1 = mid2; val1 = val2;
            mid2 = -1; val2 = -1;
        } else {
            r = mid2;
            mid2 = mid1; val2 = val1;
            mid1 = -1; val1 = -1;
        }
    }
    //cout << l << " l\n";
    int x[6]; x[0] = 0; x[r-l+2] = 0;
    for(int i=1; i<=r-l+1; i++) x[i] = ask(i+l-1);
    
    for(int i=1; i<=r-l+1; i++){
        //cout << i << ' ' << x[i] << "p\n";
        if(max(x[i-1], x[i+1]) <= x[i]){
            ans(i+l-1); break;
        }
    }
}
signed main() {
    cin >> n >> m >> k >> q;
    find(1, n);
}

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