func_code_string: #include <bits/stdc++.h>   using namespace std;   int ans0[1000001];   int tail = 1;   int a[1001];   int n, m;   int ans = 0;   int main() {     int i, j, k;     int id;     int xx, yy;     int temp;     scanf( %d , &n);     for (i = 1; i <= n; i++) {       for (j = 1; j <= n; j++) {         scanf( %d , &temp);         if (i == j) {           a[i] = temp;           if (temp == 1) {             ans = 1 - ans;           }         }       }     }     scanf( %d , &m);     for (i = 1; i <= m; i++) {       scanf( %d , &id);       if (id == 1 || id == 2) {         scanf( %d , &temp);         ans = 1 - ans;         a[temp] = 1 - a[temp];       } else {         ans0[tail] = ans;         tail++;       }     }     for (i = 1; i <= tail - 1; i++) {       printf( %d , ans0[i]);     }     printf(  n );     return 0;   }   