func_code_string: #include <bits/stdc++.h>   using namespace std;   const long long M = 5005;   const int MOD = 998244353;   const int MX = 3e5 + 5;   const long long INF = 1e18;   const long double PI = acos((long double)-1);   void msm() {     ios_base::sync_with_stdio(false);     cin.tie(nullptr);     cout.tie(nullptr);   }   int sol();   int main() {     msm();     sol();     return 0;   }   int sol() {     long long n;     cin >> n;     ;     long long ar[105], arr[105][5005];     for (long long i = (0); i < (n); ++i) {       long long a;       cin >> a;       ;       ar[a]++;       arr[a][ar[a]] = i + 1;     }     long long y = min(ar[1], min(ar[2], ar[3]));     cout << y << endl;     for (long long i = (1); i <= (y); ++i)       cout << arr[1][i] <<     << arr[2][i] <<     << arr[3][i] << endl;     return 0;   }   