#include<bits/stdc++.h> //#include "minesweeper.h" typedef long long ll; #define fi first #define se second #define pii pair<ll,ll> #define N 500005 #define endl '\n' #define y0 Y0 using namespace std; const ll inf = 1e18; bool ghuy4g; bool test = 0; ll n, m, x_ans, y_ans, x0, y0; ll b[105][105]; bool check(ll x, ll y) { if (test) return (b[x][y] > 0); string ok; cout << "examine " << x << " " << y << endl; cout.flush(); cin >> ok; return (ok == "true"); } ll min_m = 3; ll keo(ll x, ll y) { if (y > x) return x + 1; return x - 1; } void solve() { if (test) { cin >> x0 >> y0; } else { cin >> n >> x0 >> y0; } ll y_trai = y0, y_phai = y0, x_tren = x0, x_duoi = x0; if (1) { ll cur_x = x0, cur_y = max(1LL, y0 - min_m), lst = y0; while (true) { bool flag = check(cur_x, cur_y); if (flag == 0 || cur_y == 1) break; lst = cur_y; min_m = max(min_m, abs(y0 - cur_y) + 1); cur_y = max(1LL, cur_y - min_m); } ll l = cur_y, r = lst; while (l <= r) { ll mid = (l + r) / 2; bool flag = check(x0, mid); if (flag == 1) { y_trai = mid; r = mid - 1; } else { l = mid + 1; } } } if (1) { ll cur_x = x0, cur_y = min(n, y0 + min_m), lst = y0; while (true) { bool flag = check(cur_x, cur_y); if (flag == 0 || cur_y == n) break; lst = cur_y; min_m = max(min_m, abs(y0 - cur_y) + 1); cur_y = min(n, cur_y + min_m); } ll l = lst, r = cur_y; while (l <= r) { ll mid = (l + r) / 2; bool flag = check(x0, mid); if (flag == 1) { l = mid + 1; y_phai = mid; } else { r = mid - 1; } } } if (1) { ll cur_x = max(1LL, x0 - min_m), lst = x0; while (true) { bool flag = check(cur_x, y0); if (test) cout << " cur_x " << cur_x << " " << flag << endl; if (flag == 0 || cur_x == 1) break; lst = cur_x; min_m = max(min_m, abs(x0 - cur_x) + 1); cur_x = max(1LL, cur_x - min_m); } ll l = cur_x, r = lst; while (l <= r) { ll mid = (l + r) / 2; bool flag = check(mid, y0); if (flag == 1) { x_tren = mid; r = mid - 1; } else { l = mid + 1; } } } if (test) cout << "min m: " << min_m << endl; if (1) { ll cur_x = min(n, x0 + min_m), lst = x0; while (true) { bool flag = check(cur_x, y0); if (flag == 0 || cur_x == n) break; lst = cur_x; min_m = max(min_m, abs(x0 - cur_x) + 1); cur_x = min(n, cur_x + min_m); } ll l = lst, r = cur_x; while (l <= r) { ll mid = (l + r) / 2; bool flag = check(mid, y0); if (flag == 1) { x_duoi = mid; l = mid + 1; } else { r = mid - 1; } } } if (test) { cout << "min m: " << min_m << endl; cout << "x tren duoi " << x_duoi << " " << x_tren << endl; cout << "y tren duoi " << y_trai << " " << y_phai << endl; } ll tam_x = (x_tren + x_duoi) / 2; ll tam_y = (y_trai + y_phai) / 2; m = abs(x_tren - x_duoi) + 1; ll x_ans1 = inf, x_ans2 = 0, y_ans1 = inf, y_ans2 = 0; if (1) { ll l = 0, r = min(tam_x, tam_y) - 1, ans = -1; while (l <= r) { ll mid = (l + r) / 2; ll xet_x = tam_x - mid, xet_y = tam_y - mid; if (xet_x < 1 || xet_y < 1 || xet_x > n || xet_y > n || check(xet_x, xet_y) == 0) { r = mid - 1; } else { l = mid + 1; ans = mid; } } x_ans1 = min(x_ans1, tam_x - ans); x_ans2 = max(x_ans2, tam_x - ans); y_ans1 = min(y_ans1, tam_y - ans); y_ans2 = max(y_ans2, tam_y - ans); } if (1) { ll l = 0, r = min(n - tam_x, n - tam_y), ans = -1; while (l <= r) { ll mid = (l + r) / 2; ll xet_x = tam_x + mid, xet_y = tam_y + mid; if (xet_x < 1 || xet_y < 1 || xet_x > n || xet_y > n || check(xet_x, xet_y) == 0) { r = mid - 1; } else { l = mid + 1; ans = mid; } } x_ans1 = min(x_ans1, tam_x + ans); x_ans2 = max(x_ans2, tam_x + ans); y_ans1 = min(y_ans1, tam_y + ans); y_ans2 = max(y_ans2, tam_y + ans); } if (1) { ll l = 0, r = min(tam_x - 1, n - tam_y), ans = -1; while (l <= r) { ll mid = (l + r) / 2; ll xet_x = tam_x - mid, xet_y = tam_y + mid; if (xet_x < 1 || xet_y < 1 || xet_x > n || xet_y > n || check(xet_x, xet_y) == 0) { r = mid - 1; } else { l = mid + 1; ans = mid; } } x_ans1 = min(x_ans1, tam_x - ans); x_ans2 = max(x_ans2, tam_x - ans); y_ans1 = min(y_ans1, tam_y + ans); y_ans2 = max(y_ans2, tam_y + ans); } if (1) { ll l = 0, r = min(tam_y - 1, n - tam_x), ans = -1; while (l <= r) { ll mid = (l + r) / 2; ll xet_x = tam_x + mid, xet_y = tam_y - mid; if (xet_x < 1 || xet_y < 1 || xet_x > n || xet_y > n || check(xet_x, xet_y) == 0) { r = mid - 1; } else { l = mid + 1; ans = mid; } } x_ans1 = min(x_ans1, tam_x + ans); x_ans2 = max(x_ans2, tam_x + ans); y_ans1 = min(y_ans1, tam_y - ans); y_ans2 = max(y_ans2, tam_y - ans); } if (abs(x_ans1 - x_ans2) == abs(y_ans1 - y_ans2)) { x_ans = (x_ans1 + x_ans2) / 2; y_ans = (y_ans1 + y_ans2) / 2; cout << "solution " << x_ans << " " << y_ans << endl; cout.flush(); } else if (abs(x_ans1 - x_ans2) > abs(y_ans1 - y_ans2)) { x_ans = (x_ans1 + x_ans2) / 2; if (tam_y - m / 2 <= y_ans1 && y_ans1 <= tam_y + m / 2) { cout << "solution " << x_ans << " " << keo(y_ans2, y_ans1) << endl; cout.flush(); } else { cout << "solution " << x_ans << " " << keo(y_ans1, y_ans2) << endl; cout.flush(); } } else { y_ans = (y_ans1 + y_ans2) / 2; if (tam_x - m / 2 <= x_ans1 && x_ans1 <= tam_x + m / 2) { cout << "solution " << keo(x_ans2, x_ans1) << " " << y_ans << endl; cout.flush(); } else { cout << "solution " << keo(x_ans1, x_ans2) << " " << y_ans << endl; cout.flush(); } } } void testing() { if (test) { cin >> n >> m; cin >> x_ans >> y_ans; cin >> x0 >> y0; for (int x = x_ans - m * 2 - m / 2; x <= x_ans - m * 2 - m / 2 + m * 2 * 2; x += m * 2) { for (int y = y_ans - m * 2 - m / 2; y <= y_ans - m * 2 - m / 2 + m * 2 * 2; y += m * 2) { for (int i = 0; i < m; i ++) { for (int j = 0; j < m; j ++) { b[x + i][y + j] = 1; } } } } for (int x = x_ans - m / 2 - m; x <= x_ans - m / 2 - m + m * 2; x += m * 2) { for (int y = y_ans - m / 2 - m; y <= y_ans - m / 2 - m + m * 2; y += m * 2) { for (int i = 0; i < m; i ++) { for (int j = 0; j < m; j ++) { b[x + i][y + j] = 1; } } } } b[x_ans][y_ans] = 2; /*for (int i = 1; i <= n; i ++) { for (int j = 1; j <= n; j ++) { cout << b[i][j] << " "; } cout << endl; }*/ } solve(); } bool klinh; signed main() { if (fopen("kghmdlod.inp", "r")) { freopen("kghmdlod.inp", "r", stdin); freopen("kghmdlod.out", "w", stdout); } srand(time(0)); ios_base::sync_with_stdio(0); cin.tie(0); testing(); cerr << fabs(&klinh - &ghuy4g) / double(1024 * 1024); }

aliens.cpp: In function 'int main()':
aliens.cpp:284:24: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  284 |                 freopen("kghmdlod.inp", "r", stdin);
      |                 ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
aliens.cpp:285:24: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  285 |                 freopen("kghmdlod.out", "w", stdout);
      |                 ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~