Submission #1099941

#	Time	Username	Problem	Language	Result	Execution time	Memory
1099941		njoop	Aliens (IOI07_aliens)	C++14	0 / 100	1 ms	356 KiB

aliens

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

int n, x, y, m, bl, br, xl, xr, yl, yr;
string s;
int pow2[50];

signed main() {
    cin >> n >> x >> y;
    pow2[0] = 1;
    for(int i=1; i<50; i++) {
        pow2[i] = pow2[i-1] * 2;
    }
    for(int i=0; i<n; i++) {
        bl = i == 0 ? x : x + pow2[i-1];
        br = x + pow2[i];
        cout << "examine " << br << " " << y << endl;  
        cin >> s;
        if(s[0] == 'f') break;
    }
    while(bl < br) {
        int mid = bl + (br-bl)/2;
        cout << "examine " << mid << " " << y << endl;
        cin >> s;
        if(s[0] == 't') {
            bl = mid+1;
        } else {
            br = mid;
        }
    }
    xr = bl-1;
    for(int i=0; i<n; i++) {
        bl = i == 0 ? x : x - pow2[i-1];
        br = x - pow2[i];
        cout << "examine " << x-pow2[i] << " " << y << endl;  
        cin >> s;
        if(s[0] == 'f') break;
    }
    while(bl < br) {
        int mid = bl + (br-bl)/2;
        cout << "examine " << x-mid << " " << y << endl;
        cin >> s;
        if(s[0] == 't') {
            bl = mid+1;
        } else {
            br = mid;
        }
    }
    xl = bl;
    m = xr-xl+1;
    bl = 0, br = m;
    while(bl < br) {
        int mid = bl + (br-bl)/2;
        cout << "examine " << x << " " << y+mid << endl;
        cin >> s;
        if(s[0] == 't') {
            bl = mid+1;
        } else {
            br = mid;
        }
    }
    yr = y+bl-1;
    yl = yr-m+1;
    int cx = (xl+xr)/2;
    int cy = (yl+yr)/2;
    int rb=0, ub=0;
    for(int i=4; i>0; i--) {
        for(int j=-1; j<2; j++) {
            cout << "examine " << cx+(i*m) << " " << cy+(j*m) << endl;
            cin >> s;
            if(s[0] == 't') {
                rb = i;
                goto jump;
            }
        }
    }
    jump:;
    for(int i=4; i>0; i--) {
        for(int j=-1; j<2; j++) {
            cout << "examine " << cx+(j*m) << " " << cy+(i*m) << endl;
            cin >> s;
            if(s[0] == 't') {
                ub = j;
                goto jump2;
            }
        }
    }
    jump2:;
    cout << cx+((rb-2)*m) << " " << n-cy+((ub-2)*m)+1 << "\n";
    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