func_code_string: #include <bits/stdc++.h>   using namespace std;   using ll = long long;   using ld = long double;   using pii = pair<int, int>;   int const N = 1e5 + 20, MAX = 7000 + 20;   int n, q;   bitset<MAX> bt[N];   int a[MAX];   vector<int> dv[MAX];   bitset<MAX> save[MAX];   void pre() {     a[1] = 1;     for (int i = 1; i < MAX; i++) {       for (int j = 2 * i; j < MAX; j += i) a[j] ^= a[i], dv[j].push_back(i);       dv[i].push_back(i);     }     for (int i = 1; i < MAX; i++) {       for (int j = 1; i * j < MAX; j++) {         if (a[j]) save[i][i * j] = 1;       }     }   }   int main() {     pre();     scanf( %d %d  , &n, &q);     while (q--) {       int tp, x, y, z, v;       scanf( %d  , &tp);       if (tp == 1) {         scanf( %d %d  , &x, &v);         x--;         bt[x].reset();         for (int u : dv[v]) bt[x][u] = 1;       } else if (tp == 2) {         scanf( %d %d %d  , &x, &y, &z);         x--, y--, z--;         bt[x] = (bt[y] ^ bt[z]);       } else if (tp == 3) {         scanf( %d %d %d  , &x, &y, &z);         x--, y--, z--;         bt[x] = (bt[y] & bt[z]);       } else if (tp == 4) {         scanf( %d %d  , &x, &v);         x--;         bitset<MAX> tmp = (bt[x] & save[v]);         putchar( 0  + (tmp.count() & 1));       }     }     putchar(  n );   }   