Submission #642292

#	Time	Username	Problem	Language	Result	Execution time	Memory
642292		devariaota	Aliens (IOI07_aliens)	C++17	0 / 100	3 ms	208 KiB

aliens

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<ll, ll> pll;
typedef pair<int, int> pii;
typedef vector<int> vi;
typedef vector<ll> vll;
const ll mod=1e9+7;
const ll maxn=2e6+5;
const ll INF=1e18;
#define ok ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
#define fi first
#define se second
#define pb push_back
#define ub upper_bound
#define lb lower_bound
#define endl '\n'
int n, x, y, l, r, u, d, mx=-1, xx=1, yy=1;
string jwb;
int main() {
    ok
    cin >> n >> x >> y;
    for(int i=0; i<=30; i++) {
        ll nx=x+(1<<i);
        if(nx>n || nx<1) break;
        cout << "examine " << nx << " " << y << endl;
        cout.flush();
        cin >> jwb;
        if(jwb=="true") {
            mx=i;
        } else break;
    }
    if(mx>=0) {
        r=x+(1<<mx);
    } else r=x;
    for(int i=mx-1; i>=0; i--) {
        ll nx=r+(1<<i);
        if(nx>n || nx<1) continue;
        cout << "examine " << nx << " " << y << endl;
        cout.flush();
        cin >> jwb;
        if(jwb=="true") {
            r+=(1<<i);
        }
    }
    mx=-1;
    for(int i=0; i<=30; i++) {
        ll nx=x-(1<<i);
        if(nx>n || nx<1) break;
        cout << "examine " << nx << " " << y << endl;
        cout.flush();
        cin >> jwb;
        if(jwb=="true") {
            mx=i;
        } else break;
    }
    if(mx>=0) {
        l=x-(1<<mx);
    } else l=x;
    for(int i=mx-1; i>=0; i--) {
        ll nx=l-(1<<i);
        if(nx>n || nx<1) continue;
        cout << "examine " << nx << " " << y << endl;
        cout.flush();
        cin >> jwb;
        if(jwb=="true") {
            l-=(1<<i);
        }
    }
    mx=-1;
    for(int i=0; i<=30; i++) {
        ll nx=y+(1<<i);
        if(nx>n || nx<1) break;
        cout << "examine " << x << " " << nx << endl;
        cout.flush();
        cin >> jwb;
        if(jwb=="true") {
            mx=i;
        } else break;
    }
    if(mx>=0) {
        u=y+(1<<mx);
    } else u=y;
    for(int i=mx-1; i>=0; i--) {
        ll nx=u+(1<<i);
        if(nx>n || nx<1) continue;
        cout << "examine " << x << " " << nx << endl;
        cout.flush();
        cin >> jwb;
        if(jwb=="true") {
            u+=(1<<i);
        }
    }
    mx=-1;
    for(int i=0; i<=30; i++) {
        ll nx=y-(1<<i);
        if(nx>n || nx<1) break;
        cout << "examine " << x << " " << nx << endl;
        cout.flush();
        cin >> jwb;
        if(jwb=="true") {
            mx=i;
        } else break;
    }
    if(mx>=0) {
        d=y-(1<<mx);
    } else d=y;
    for(int i=mx-1; i>=0; i--) {
        ll nx=d-(1<<i);
        if(nx>n || nx<1) continue;
        cout << "examine " << x << " " << nx << endl;
        cout.flush();
        cin >> jwb;
        if(jwb=="TRUE") {
            d-=(1<<i);
        }
    }
    int sz=u-d+1;
    for(int i=2; i<=3; i++) {
        ll nx=l-2*sz;
        if(nx>n || nx<1) break;
        cout << "examine " << nx << " " << y << endl;
        cout.flush();
        cin >> jwb;
        if(jwb=="true") {
            xx=i;
        } else break;
    }
    for(int i=2; i<=3; i++) {
        ll nx=d-2*sz;
        if(nx>n || nx<1) break;
        cout << "examine " << x << " " << nx << endl;
        cout.flush();
        cin >> jwb;
        if(jwb=="true") {
            yy=i;
        } else break;
    }
    ll midx=(l+r)/2;
    ll midy=(u+d)/2;
    cout <<"solution " << midx+(2-xx)*2*sz << " " << midy+(2-yy)*2*sz << endl;
    cout.flush();
    return 0;
}

• Subtask 1: 0 / 10
• Subtask 2: 0 / 10
• Subtask 3: 0 / 10
• Subtask 4: 0 / 10
• Subtask 5: 0 / 10
• Subtask 6: 0 / 10
• Subtask 7: 0 / 10
• Subtask 8: 0 / 10
• Subtask 9: 0 / 10
• Subtask 10: 0 / 10