Language: C++

#include <bits/stdc++.h>
#include <unistd.h>
#include <sys/time.h>
#include <stdlib.h>
 
using namespace std;
 
typedef long long ll;
typedef pair<ll,ll> P;
typedef pair<P, ll> T;
 
long long int INF = 2e18;
const ll fact_table = 1200008;
double Pi = 3.1415926535897932384626;

priority_queue <ll> pql;
priority_queue <P> pqp;
priority_queue <P> bag;
//big priority queue
priority_queue <ll,vector<ll>,greater<ll> > pqls;
priority_queue <P,vector<P>,greater<P> > pqps;
//small priority queue
//top pop
 
ll dx[8]={1,0,-1,0,1,1,-1,-1};
ll dy[8]={0,1,0,-1,1,-1,-1,1};
char dir[] = "DRUL";
//↓,→,↑,←

#define endl "\n"
#ifdef ENJAPMA
    #undef endl
#endif
#define p(x) cout<<x<<endl;
#define el cout<<endl;
#define pe(x) cout<<x<<" ";
#define ps(x) cout<<fixed<<setprecision(25)<<x<<endl;
#define pu(x) cout<<(x);
#define pb push_back
#define lb lower_bound
#define ub upper_bound
#define CLEAR(a) a = decltype(a)(); 
#define pc(x) cout << x << ",";
 
const ll mod = 998244353ll;
// const ll mod = 1000000007ll;
  
ll mypow(ll number1,ll number2, ll mod){
    if(number2 == 0){
        return 1ll;
    }else{
        ll number3 = mypow(number1,number2 / 2, mod);
        number3 *= number3;
        number3 %= mod;
        if(number2%2==1){
            number3 *= number1;
            number3 %= mod;
        }
        return number3;
    }
}
void YES(bool condition){
    if(condition){
        p("YES");
    }else{
        p("NO");
    }
    return;
}
void Yes(bool condition){
    if(condition){
        p("Yes");
    }else{
        p("No");
    }
    return;
}

/*
ll fact[fact_table + 5],rfact[fact_table + 5]; 
 
void c3_init(){
    fact[0] = rfact[0] = 1;
    for(ll i=1; i<=fact_table; i++){
        fact[i] = (fact[i-1]*i) % mod;
    }
    rfact[fact_table] = mypow(fact[fact_table],mod - 2, mod);
    for(ll i=fact_table; i>=1; i--){
       rfact[i-1] = rfact[i] * i;
       rfact[i-1] %= mod;
    }
    return;}
ll c3(ll n,ll r){
    return (((fact[n] * rfact[r]) % mod ) * rfact[n-r]) % mod;}
*/
bool multicase = false;

ll n,m,num,a,b,c,d,e,h,q;
ll w, k, ans;
ll x[500005], y[500005];
ll dp[15][500005];
string s;
ll query = 0;
ll table[505][505];
ll cost[3][505][505];
bool used[505][505];


ll parent[500005], sizes[500005];

void init(ll n){
    for(ll i=0;i<=n;i++){
        parent[i] = i;
    }
}
ll find(ll x){
    if(parent[x] == x){
        return x;
    }else{
        return parent[x] = find(parent[x]);
    }
}

void unite(ll x,ll y){
    x = find(x);
    y = find(y);
    if(x == y)return;
    if(sizes[x] < sizes[y])swap(x, y);

    parent[y] = x;
    sizes[x] += sizes[y];
}

bool same(ll x,ll y){
    return find(x) == find(y);
}

ll size(ll x){
    return sizes[find(x)];
}

void solve(){
    cin >> n;
    init(n * n * 2 + 100);
    ll cnt = 1;
    for(ll i=0;i<n*n;i++){
        cin >> x[i];
        ll nx = (x[i] + n - 1) / n, ny = x[i] % n;
        if(ny == 0) ny = n;
        table[nx][ny] = cnt;
        cnt ++;
    }
    queue<P> que;
    for(ll i=1;i<=n;i++){
        for(ll j=1;j<=n;j++){
            ll res = min({i, j, n + 1 - i, n + 1 - j});
            cost[0][i][j] = res - 1;
            cost[1][i][j] = res;
            y[find((n * i + j) * 2)] = res - 1;
            y[find((n * i + j) * 2 + 1)] = res;
        }
    }
    ll ans = 0;
    for(ll i=0;i<n*n;i++){
        ll nx = (x[i] + n - 1) / n, ny = x[i] % n;
        if(ny == 0) ny = n;
        ll i = nx, j = ny;
        ans += y[find((n * i + j) * 2)];
        ll cost1 = y[find((n * i + j) * 2)];
        ll cost2 = y[find((n * i + j) * 2 + 1)];
        unite((n * i + j) * 2, (n * i + j) * 2 + 1);
        y[find((n * i + j) * 2)] = min(cost1, cost2);

    }
    p(ans);
    
    for(ll i=1;i<=n;i++){
        for(ll j=1;j<=n;j++){
            pe(cost[i][j]);
        }
        el;
    }
    p(ans);
    return;
}


int main(){
    // init();
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    ll q, testcase = 1;
    if(multicase){
        cin >> q;
    }else{
        q = 1; 
    }
    while(q--){
        // pu("Case ");pu("#");pu(testcase);pu(": ");
        solve();
        testcase++;
    }
    // solve();
    return 0;
}
















Compiler output:
a.cc: In function 'void solve()':
a.cc:167:12: error: redeclaration of 'll i'
  167 |         ll i = nx, j = ny;
      |            ^
a.cc:164:12: note: 'll i' previously declared here
  164 |     for(ll i=0;i<n*n;i++){
      |            ^