Submission #1038391

#	Time	Username	Problem	Language	Result	Execution time	Memory
1038391		ArthuroWich	Aliens (IOI07_aliens)	C++17	20 / 100	2 ms	600 KiB

aliens

#include <bits/stdc++.h>
using namespace std;
#define int long long int
int n;
bool query(int x, int y) {
    if (x < 1 || y < 1 || x > n || y > n) {
        return 0;
    }
    cout << "examine " << x << " " << y << endl;
    string s;
    cin >> s;
    if (s == "true") {
        return 1;
    } else {
        return 0;
    }
}
void solve() {
    int x0, y0;
    cin >> n >> x0 >> y0;
    int m = 1;
    int x = x0-1, y = y0, lx = x0, ly;
    while(query(x, y)) {
        lx = x;
        m++;
        x--;
    }
    x = x0+1;
    while(query(x, y)) {
        m++;
        x++;
    }
    x = lx, y = y0;
    while(query(x, y)) {
        ly = y;
        y--;
    }
    x = lx, y = ly;
    while(query(x, y)) {
        lx = x;
        ly = y;
        x -= m;
        y -= m;
    }
    x = lx;
    y = ly;
    while(query(x, y)) {
        lx = x;
        ly = y;
        x -= 2*m;
    }
    cout << "solution " << lx+5*m/2 << " " << ly+5*m/2 << endl;
}
int32_t main() {
    ios::sync_with_stdio(0);
    cin.tie(0);
    int t;
    t = 1;
    while(t--) {
        solve();
    }
}

Compilation message (stderr)

aliens.cpp: In function 'void solve()':
aliens.cpp:22:36: warning: 'ly' may be used uninitialized in this function [-Wmaybe-uninitialized]
   22 |     int x = x0-1, y = y0, lx = x0, ly;
      |                                    ^~

• Subtask 1: 0 / 10
• Subtask 2: 10 / 10
• Subtask 3: 10 / 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