Problem p02710 (C++) — buggy submission, verdict: Runtime Error

#include <bits/stdc++.h>

//    #include <boost/multiprecision/cpp_int.hpp>
#define int long long
#define inf 1000000007
#define pa pair<int, int>
#define ll long long
#define pal pair<double, double>
#define ppap pair<pa, int>
#define PI 3.14159265358979323846
#define paa pair<int, char>
#define mp make_pair
#define pb push_back
#define EPS (1e-8)

int dx[8] = {0, 1, 0, -1, 1, 1, -1, -1};
int dy[8] = {1, 0, -1, 0, -1, 1, 1, -1};
using namespace std;
class pa3 {
public:
  int x;
  int y, z;
  pa3(int x = 0, int y = 0, int z = 0) : x(x), y(y), z(z) {}
  bool operator<(const pa3 &p) const {
    if (x != p.x)
      return x < p.x;
    if (y != p.y)
      return y < p.y;
    return z < p.z;
    // return x != p.x ? x<p.x: y<p.y;
  }
  bool operator>(const pa3 &p) const {
    if (x != p.x)
      return x > p.x;
    if (y != p.y)
      return y > p.y;
    return z > p.z;
    // return x != p.x ? x<p.x: y<p.y;
  }
  bool operator==(const pa3 &p) const {
    return x == p.x && y == p.y && z == p.z;
  }
  bool operator!=(const pa3 &p) const {
    return !(x == p.x && y == p.y && z == p.z);
  }
};

class pa4 {
public:
  int x;
  int y, z, w;
  pa4(int x = 0, int y = 0, int z = 0, int w = 0) : x(x), y(y), z(z), w(w) {}
  bool operator<(const pa4 &p) const {
    if (x != p.x)
      return x < p.x;
    if (y != p.y)
      return y < p.y;
    if (z != p.z)
      return z < p.z;
    return w < p.w;
    // return x != p.x ? x<p.x: y<p.y;
  }
  bool operator>(const pa4 &p) const {
    if (x != p.x)
      return x > p.x;
    if (y != p.y)
      return y > p.y;
    if (z != p.z)
      return z > p.z;
    return w > p.w;
    // return x != p.x ? x<p.x: y<p.y;
  }
  bool operator==(const pa4 &p) const {
    return x == p.x && y == p.y && z == p.z && w == p.w;
  }
};
class pa2 {
public:
  int x, y;
  pa2(int x = 0, int y = 0) : x(x), y(y) {}
  pa2 operator+(pa2 p) { return pa2(x + p.x, y + p.y); }
  pa2 operator-(pa2 p) { return pa2(x - p.x, y - p.y); }
  bool operator<(const pa2 &p) const { return y != p.y ? y < p.y : x < p.x; }
  bool operator>(const pa2 &p) const { return x != p.x ? x < p.x : y < p.y; }
  bool operator==(const pa2 &p) const {
    return abs(x - p.x) == 0 && abs(y - p.y) == 0;
  }
  bool operator!=(const pa2 &p) const {
    return !(abs(x - p.x) == 0 && abs(y - p.y) == 0);
  }
};

string itos(int i) {
  ostringstream s;
  s << i;
  return s.str();
}

int Gcd(int v, int b) {
  if (v == 0)
    return b;
  if (b == 0)
    return v;
  if (v > b)
    return Gcd(b, v);
  if (v == b)
    return b;
  if (b % v == 0)
    return v;
  return Gcd(v, b % v);
}

int mod;
int extgcd(int a, int b, int &x, int &y) {
  if (b == 0) {
    x = 1;
    y = 0;
    return a;
  }
  int d = extgcd(b, a % b, y, x);
  y -= a / b * x;
  return d;
}
pa operator+(const pa &l, const pa &r) {
  return {l.first + r.first, l.second + r.second};
}
pa operator-(const pa &l, const pa &r) {
  return {l.first - r.first, l.second - r.second};
}
int beki(int wa, int rr, int warukazu) {
  if (rr == 0)
    return 1 % warukazu;
  if (rr == 1)
    return wa % warukazu;
  wa %= warukazu;
  if (rr % 2 == 1)
    return ((ll)beki(wa, rr - 1, warukazu) * (ll)wa) % warukazu;
  ll zx = beki(wa, rr / 2, warukazu);
  return (zx * zx) % warukazu;
}

int pr[1000100];
int inv[1000110];

int comb(int nn, int rr) {
  if (rr < 0 || rr > nn || nn < 0)
    return 0;
  int r = pr[nn] * inv[rr];
  r %= mod;
  r *= inv[nn - rr];
  r %= mod;
  return r;
}

void gya(int ert) {
  pr[0] = 1;
  for (int i = 1; i <= ert; i++) {
    pr[i] = ((ll)pr[i - 1] * i) % mod;
  }
  inv[ert] = beki(pr[ert], mod - 2, mod);
  for (int i = ert - 1; i >= 0; i--) {
    inv[i] = (ll)inv[i + 1] * (i + 1) % mod;
  }
}

//   cin.tie(0);
//	ios::sync_with_stdio(false);
// priority_queue<pa3,vector<pa3>,greater<pa3>> pq;
// sort(ve.begin(),ve.end(),greater<int>());
//   mt19937(clock_per_sec);
//  mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count()) ;

int ko[200020] = {};
int ko2[200020];
int ima[200020] = {};
int c[200020] = {};
vector<int> G[200020];
int oya[200020] = {};
int f[200020];
vector<int> ve[200020];
vector<int> F[200020];
int dfs2(int r, int p) {
  int g = ima[c[r]];
  ima[c[r]] = r;
  oya[r] = g;
  if (g == 0)
    f[c[r]] -= ko[r] + 1;
  else {
    F[g].back() -= ko[r] + 1;
  }
  for (auto v : G[r])
    if (v != p) {
      F[r].pb(ko[v] + 1);
      dfs2(v, r);
    }
  ima[c[r]] = g;
  return 0;
}

int dfs1(int r, int p) {
  for (auto v : G[r])
    if (v != p)
      ko[r] += dfs1(v, r) + 1;
  return ko[r];
}

signed main() {
  cin.tie(0);
  ios::sync_with_stdio(false);

  int n;
  cin >> n;

  for (int i = 1; i <= n; i++)
    cin >> c[i];

  for (int i = 0; i < n - 1; i++) {
    int y, yy;
    cin >> y >> yy;
    G[y].pb(yy);
    G[yy].pb(y);
  }

  dfs1(1, 1);
  ko[0] = n;
  for (int i = 1; i <= n; i++)
    ko2[i] = ko[i], f[i] = n;
  dfs2(1, 1);

  for (int i = 1; i <= n; i++)
    ve[i].pb(f[i]);
  for (int i = 1; i <= n; i++)
    for (auto v : F[i])
      ve[c[i]].pb(v);
  int zen = n * (n + 1) / 2;
  for (int i = 1; i <= n; i++) {
    int z = zen;
    for (auto v : ve[i])
      z -= v * (v + 1) / 2;
    cout << z << endl;
  }

  return 0;
}


Error: 0

Fixed submission:

#include <bits/stdc++.h>

//    #include <boost/multiprecision/cpp_int.hpp>
#define int long long
#define inf 1000000007
#define pa pair<int, int>
#define ll long long
#define pal pair<double, double>
#define ppap pair<pa, int>
#define PI 3.14159265358979323846
#define paa pair<int, char>
#define mp make_pair
#define pb push_back
#define EPS (1e-8)

int dx[8] = {0, 1, 0, -1, 1, 1, -1, -1};
int dy[8] = {1, 0, -1, 0, -1, 1, 1, -1};
using namespace std;
class pa3 {
public:
  int x;
  int y, z;
  pa3(int x = 0, int y = 0, int z = 0) : x(x), y(y), z(z) {}
  bool operator<(const pa3 &p) const {
    if (x != p.x)
      return x < p.x;
    if (y != p.y)
      return y < p.y;
    return z < p.z;
    // return x != p.x ? x<p.x: y<p.y;
  }
  bool operator>(const pa3 &p) const {
    if (x != p.x)
      return x > p.x;
    if (y != p.y)
      return y > p.y;
    return z > p.z;
    // return x != p.x ? x<p.x: y<p.y;
  }
  bool operator==(const pa3 &p) const {
    return x == p.x && y == p.y && z == p.z;
  }
  bool operator!=(const pa3 &p) const {
    return !(x == p.x && y == p.y && z == p.z);
  }
};

class pa4 {
public:
  int x;
  int y, z, w;
  pa4(int x = 0, int y = 0, int z = 0, int w = 0) : x(x), y(y), z(z), w(w) {}
  bool operator<(const pa4 &p) const {
    if (x != p.x)
      return x < p.x;
    if (y != p.y)
      return y < p.y;
    if (z != p.z)
      return z < p.z;
    return w < p.w;
    // return x != p.x ? x<p.x: y<p.y;
  }
  bool operator>(const pa4 &p) const {
    if (x != p.x)
      return x > p.x;
    if (y != p.y)
      return y > p.y;
    if (z != p.z)
      return z > p.z;
    return w > p.w;
    // return x != p.x ? x<p.x: y<p.y;
  }
  bool operator==(const pa4 &p) const {
    return x == p.x && y == p.y && z == p.z && w == p.w;
  }
};
class pa2 {
public:
  int x, y;
  pa2(int x = 0, int y = 0) : x(x), y(y) {}
  pa2 operator+(pa2 p) { return pa2(x + p.x, y + p.y); }
  pa2 operator-(pa2 p) { return pa2(x - p.x, y - p.y); }
  bool operator<(const pa2 &p) const { return y != p.y ? y < p.y : x < p.x; }
  bool operator>(const pa2 &p) const { return x != p.x ? x < p.x : y < p.y; }
  bool operator==(const pa2 &p) const {
    return abs(x - p.x) == 0 && abs(y - p.y) == 0;
  }
  bool operator!=(const pa2 &p) const {
    return !(abs(x - p.x) == 0 && abs(y - p.y) == 0);
  }
};

string itos(int i) {
  ostringstream s;
  s << i;
  return s.str();
}

int Gcd(int v, int b) {
  if (v == 0)
    return b;
  if (b == 0)
    return v;
  if (v > b)
    return Gcd(b, v);
  if (v == b)
    return b;
  if (b % v == 0)
    return v;
  return Gcd(v, b % v);
}

int mod;
int extgcd(int a, int b, int &x, int &y) {
  if (b == 0) {
    x = 1;
    y = 0;
    return a;
  }
  int d = extgcd(b, a % b, y, x);
  y -= a / b * x;
  return d;
}
pa operator+(const pa &l, const pa &r) {
  return {l.first + r.first, l.second + r.second};
}
pa operator-(const pa &l, const pa &r) {
  return {l.first - r.first, l.second - r.second};
}
int beki(int wa, int rr, int warukazu) {
  if (rr == 0)
    return 1 % warukazu;
  if (rr == 1)
    return wa % warukazu;
  wa %= warukazu;
  if (rr % 2 == 1)
    return ((ll)beki(wa, rr - 1, warukazu) * (ll)wa) % warukazu;
  ll zx = beki(wa, rr / 2, warukazu);
  return (zx * zx) % warukazu;
}

int pr[1000100];
int inv[1000110];

int comb(int nn, int rr) {
  if (rr < 0 || rr > nn || nn < 0)
    return 0;
  int r = pr[nn] * inv[rr];
  r %= mod;
  r *= inv[nn - rr];
  r %= mod;
  return r;
}

void gya(int ert) {
  pr[0] = 1;
  for (int i = 1; i <= ert; i++) {
    pr[i] = ((ll)pr[i - 1] * i) % mod;
  }
  inv[ert] = beki(pr[ert], mod - 2, mod);
  for (int i = ert - 1; i >= 0; i--) {
    inv[i] = (ll)inv[i + 1] * (i + 1) % mod;
  }
}

//   cin.tie(0);
//	ios::sync_with_stdio(false);
// priority_queue<pa3,vector<pa3>,greater<pa3>> pq;
// sort(ve.begin(),ve.end(),greater<int>());
//   mt19937(clock_per_sec);
//  mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count()) ;

int ko[200020] = {};
int ko2[200020];
int ima[200020] = {};
int c[200020] = {};
vector<int> G[200020];
int oya[200020] = {};
int f[200020];
vector<int> ve[200020];
vector<int> F[200020];
int dfs2(int r, int p) {
  int g = ima[c[r]];
  ima[c[r]] = r;
  oya[r] = g;
  if (g == 0)
    f[c[r]] -= ko[r] + 1;
  else {
    F[g].back() -= ko[r] + 1;
  }
  for (auto v : G[r])
    if (v != p) {
      F[r].pb(ko[v] + 1);
      dfs2(v, r);
    }
  ima[c[r]] = g;
}

int dfs1(int r, int p) {
  for (auto v : G[r])
    if (v != p)
      ko[r] += dfs1(v, r) + 1;
  return ko[r];
}

signed main() {
  cin.tie(0);
  ios::sync_with_stdio(false);

  int n;
  cin >> n;

  for (int i = 1; i <= n; i++)
    cin >> c[i];

  for (int i = 0; i < n - 1; i++) {
    int y, yy;
    cin >> y >> yy;
    G[y].pb(yy);
    G[yy].pb(y);
  }

  dfs1(1, 1);
  ko[0] = n;
  //	cout<<"d"<<endl;
  for (int i = 1; i <= n; i++)
    ko2[i] = ko[i], f[i] = n;
  dfs2(1, 1);
  //	for(int i=1;i<=n;i++)cout<<oya[i]<<" ";
  //	cout<<endl;
  /*
  for(int i=1;i<=n;i++){
          if(oya[i]!=0){
                  ko2[oya[i]]-=ko[i]+1;
          }
          else{
                  f[c[i]]-=ko[i]+1;
          }
  }
  */
  // cout<<"! "<<ko[1]<<endl;
  for (int i = 1; i <= n; i++)
    ve[i].pb(f[i]);
  for (int i = 1; i <= n; i++)
    for (auto v : F[i])
      ve[c[i]].pb(v);
  int zen = n * (n + 1) / 2;
  for (int i = 1; i <= n; i++) {
    int z = zen;
    for (auto v : ve[i])
      z -= v * (v + 1) / 2;
    //	for(auto v:ve[i])cout<<v<<" ";
    //	cout<<endl;
    cout << z << endl;
  }

  return 0;
}