func_code_string: #include <bits/stdc++.h>   using namespace std;   void __print(int x) { cerr << x; }   void __print(long x) { cerr << x; }   void __print(long long x) { cerr << x; }   void __print(unsigned x) { cerr << x; }   void __print(unsigned long x) { cerr << x; }   void __print(unsigned long long x) { cerr << x; }   void __print(float x) { cerr << x; }   void __print(double x) { cerr << x; }   void __print(long double x) { cerr << x; }   void __print(char x) { cerr <<      << x <<     ; }   void __print(const char *x) { cerr <<     << x <<    ; }   void __print(const string &x) { cerr <<     << x <<    ; }   void __print(bool x) { cerr << (x ?  true  :  false ); }   template <typename T, typename V>   void __print(const pair<T, V> &x) {     cerr <<  { ;     __print(x.first);     cerr <<  , ;     __print(x.second);     cerr <<  } ;   }   template <typename T>   void __print(const T &x) {     int f = 0;     cerr <<  { ;     for (auto &i : x) cerr << (f++ ?  ,  :   ), __print(i);     cerr <<  } ;   }   void _print() { cerr <<  ] n ; }   template <typename T, typename... V>   void _print(T t, V... v) {     __print(t);     if (sizeof...(v)) cerr <<  ,  ;     _print(v...);   }   inline long long int GCD(long long int x, long long int y) {     if (x < y) swap(x, y);     if (x == 0) return y;     if (y == 0) return x;     return GCD(x % y, y);   }   long long int phi(long long int n) {     long long int result = n;     for (long long int i = 2; i * i <= n; i++) {       if (n % i == 0) {         while (n % i == 0) n /= i;         result -= result / i;       }     }     if (n > 1) result -= result / n;     return result;   }   long long int power(long long int x, long long int n, long long int mod) {     long long int res = 1;     x %= mod;     while (n) {       if (n & 1) {         res = ((res * x) % mod + mod) % mod;       }       x = ((x * x) % mod + mod) % mod;       n >>= 1;     }     return res;   }   long long int A[105][105];   long long int row[105], col[105], fr[105] = {0}, fc[105] = {0}, cr = 0, cc = 0;   int main() {     ios_base::sync_with_stdio(false);     cin.tie(0);     cout.tie(0);     ;     long long int n, m;     cin >> n >> m;     for (long long int i = 1; i <= n; i++) {       for (long long int j = 1; j <= m; j++) {         cin >> A[i][j];         row[i] += A[i][j];         col[j] += A[i][j];       }     }     while (1) {       bool f = true;       for (long long int i = 1; i <= n; i++) {         if (row[i] < 0) {           f = false;           fr[i] ^= 1;           cr--;           if (fr[i]) cr += 2;           for (long long int j = 1; j <= m; j++) {             row[i] -= (2 * A[i][j]);             col[j] -= (2 * A[i][j]);             A[i][j] = -A[i][j];           }         }       }       for (long long int j = 1; j <= m; j++) {         if (col[j] < 0) {           f = false;           fc[j] ^= 1;           cc--;           if (fc[j]) cc += 2;           for (long long int i = 1; i <= n; i++) {             row[i] -= (2 * A[i][j]);             col[j] -= (2 * A[i][j]);             A[i][j] = -A[i][j];           }         }       }       if (f) break;     }     cout << cr <<    ;     for (long long int i = 1; i <= n; i++) {       if (fr[i]) cout << i <<    ;     }     cout << endl;     cout << cc <<    ;     for (long long int j = 1; j <= m; j++) {       if (fc[j]) cout << j <<    ;     }     cout << endl;   }   