func_code_string: #include <bits/stdc++.h>   using namespace std;   long long n, m, T, k, q;   const long long big = 1000000007;   const long long big2 = 998244353;   long long M[4][4] = {0};   vector<pair<int, int> > ANS;   bool inbounds(long long i, long long j) {     return i >= 0 && j >= 0 && i < 4 && j < 4;   }   void clearm() {     for (int c1 = 0; c1 < 4; c1++) {       long long ones = 0;       for (int c2 = 0; c2 < 4; c2++) {         ones += (M[c1][c2] == 1);       }       if (ones == 4) {         for (int c2 = 0; c2 < 4; c2++) {           M[c1][c2] = 2;         }       }     }     for (int c1 = 0; c1 < 4; c1++) {       long long ones = 0;       for (int c2 = 0; c2 < 4; c2++) {         ones += (M[c2][c1] != 0);       }       if (ones == 4) {         for (int c2 = 0; c2 < 4; c2++) {           M[c2][c1] = 2;         }       }     }     for (int c1 = 0; c1 < 4; c1++) {       for (int c2 = 0; c2 < 4; c2++) {         if (M[c1][c2] == 2) M[c1][c2] = 0;       }     }   }   void place(long long dx, long long dy) {     if (dx == 1) {       if (M[0][0] == 0) {         M[0][0] = 1;         M[1][0] = 1;         ANS.push_back({0, 0});         clearm();         return;       }       if (M[2][0] == 0) {         M[2][0] = 1;         M[3][0] = 1;         ANS.push_back({2, 0});         clearm();         return;       }     } else {       for (int c1 = 0; c1 < 4; c1++) {         if (M[c1][2] == 0) {           M[c1][2] = 1;           M[c1][3] = 1;           ANS.push_back({c1, 2});           clearm();           return;         }       }     }     for (int c1 = 0; c1 < 4; c1++) {       for (int c2 = 0; c2 < 4; c2++) {         if (M[c1][c2] == 0 && inbounds(c1 + dx, c2 + dy) &&             M[c1 + dx][c2 + dy] == 0) {           ANS.push_back({c1, c2});           M[c1][c2] = 1;           M[c1 + dx][c2 + dy] = 1;           clearm();           return;         }       }     }   }   int main() {     ios_base::sync_with_stdio(0);     cin.tie(0);     long long a, b, c, e;     string s;     cin >> s;     for (int c1 = 0; c1 < s.length(); c1++) {       if (s[c1] ==  0 ) {         place(1, 0);       } else {         place(0, 1);       }       cout << ANS[c1].first + 1 <<     << ANS[c1].second + 1 <<   n ;     }     return 0;   }   