This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define sz size()
#define ff first
#define ss second
#define pb push_back
#define pii pair <int, int>
const int N = 2e5 + 5;
int n, sorag = 0;
int m = 1;
bool ask (int jj, int kk) {
if (jj > n or kk > n) return 0;
if (jj < 1 or kk < 1) return 0;
sorag++;
// assert (sorag <= 300 and m <= 100);
cout << "examine " << jj << " " << kk << endl;
string s;
cin >> s;
if (s[0] == 't') return 1;
return 0;
}
int main () {
// freopen ("input.txt", "r", stdin);
// ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
int a, b;
cin >> n >> a >> b;
int l = a, r = a;
while (l > 1) {
if (!ask(l - 1, b)) {
break;
}
l--;
m++;
}
while (r < n) {
if (!ask(r + 1, b)) break;
r++;
m++;
}
int l1 = b, r1 = b;
while (l1 > 1) {
if (!ask(a, l1 - 1)) {
break;
}
l1--;
}
while (r1 < n) {
if (!ask(a, r1 + 1)) break;
r1++;
}
// return 0;
int x = l, y = r1;
// cout << "bizow -- > " << x << " " << y << " " << l1 << " " <<
while (x > m) {
if (!ask(x - m, y)) break;
x -= m;
}
if (x > m and y + m <= n) {
if (ask(x - m, y + m)) {
x -= m;
y += m;
}
}
while (y + 2
*m <= n) {
if (!ask (x, y + 2*m)) {
break;
}
y += 2*m;
}
int jog1 = (x + 2 * m) + m / 2, jog2 = (y - 2 * m) - m / 2;
cout << "solution " << jog1 << " " << jog2;
}
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