func_code_string: #include <bits/stdc++.h>   using namespace std;   const int N = 1505;   int n, k;   map<tuple<int, int, int>, bool> memo;   bool query(int a, int b, int c) {     if (b == a || b == c) return 1;     if (a > c) swap(a, c);     auto s = make_tuple(a, b, c);     if (memo.count(s)) return memo[s];     cout <<  ?   << a + 1 <<     << b + 1 <<     << c + 1 << endl;     cout.flush();     string ans;     cin >> ans;     return memo[s] = (ans[0] ==  Y );   }   bool alive[N], done;   int GOAL;   int closer(int u, int v) {     for (int w = 0; w < int(n); w++)       if (alive[w] && w != u && w != v && query(u, w, v)) v = w;     return v;   }   int iter(int u) {     vector<int> nodes;     for (int w = 0; w < int(n); w++)       if (w != u && alive[w]) nodes.push_back(w);     int sz = nodes.size();     auto w = nodes[rand() % sz];     w = closer(u, w);     vector<int> u_friends, w_friends;     u_friends.push_back(u);     w_friends.push_back(w);     for (auto v : nodes)       if (v != w) {         if (query(u, w, v))           w_friends.push_back(v);         else           u_friends.push_back(u);       }     int ans;     if (u_friends.size() > w_friends.size()) {       ans = u;       if (u_friends.size() == GOAL) done = 1;       for (auto v : w_friends) alive[v] = 0;     } else {       ans = w;       if (w_friends.size() == GOAL) done = 1;       for (auto v : u_friends) alive[v] = 0;     }     return ans;   }   int main() {     srand(time(0));     cin >> n >> k;     fill_n(alive, n, 1);     GOAL = 1;     while (GOAL * k <= n) GOAL *= k;     int u = 0;     while (!done) u = iter(u);     cout <<  !   << u + 1 << endl;   }   