Submission #676510

#	Time	Username	Problem	Language	Result	Execution time	Memory
676510		browntoad	Worm Worries (BOI18_worm)	C++14	10 / 100	5 ms	8160 KiB

worm

#include <bits/stdc++.h>
#pragma GCC optimize("Ofast", "unroll-loops")
using namespace std;
#define ll long long
#define int ll
#define FOR(i,a, b) for (int i=(a); i<(b); i++)
#define REP(i, n) FOR(i, 0, n)
#define REP1(i, n) FOR(i, 1, n+1)
#define pii pair<int, int>
#define SZ(x) (int)((x).size())
#define ALL(x) (x).begin(), (x).end()
#define f first
#define s second
#define pb push_back
// #define endl '\n'
 
const ll maxn = 2e5+5;
const ll inf = (1ll<<60);
 
signed main(){
    ios::sync_with_stdio(0), cin.tie(0), cout.tie(0);
    int n, m, k, q; cin>>n>>m>>k>>q;
    vector<int> val(n+1);
    if (k==1&&m==1){
        int l=1, r=n;
        while(l<=r){
            if (l==r){
                cout<<'!'<<' '<<l<<' '<<1<<' '<<1<<endl;
                break;
            }
            int mid1=(l+r)/2;
            int mid2=mid1+1;
            if(val[mid1]==0){
                cout<<'?'<<' '<<mid1<<' '<<1<<' '<<1<<endl;
                int x; cin>>x;
                val[mid1]=x;
            }
            if (val[mid2]==0) {
                cout<<'?'<<' '<<mid2<<' '<<1<<' '<<1<<endl;
                int x; cin>>x;
                val[mid2]=x;
            }
            if (val[mid1]<=val[mid2]){
                l=mid2;
            }
            else {
                r=mid1;
            }
 
        }
 
    }
}

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