Problem p03162 (C++)

Buggy submission (status: Runtime Error):
#ifndef LOCAL
#pragma GCC optimize("O3")
#endif
#include "bits/stdc++.h"
using namespace std;
#define sim template <class c
#define ris return *this
#define dor > debug &operator<<
#define eni(x)                                                                 \
  sim > typename enable_if<sizeof dud<c>(0) x 1, debug &>::type operator<<(    \
            c i) {
sim > struct rge {
  c b, e;
};
sim > rge<c> range(c i, c j) { return rge<c>{i, j}; }
sim > auto dud(c *x) -> decltype(cerr << *x, 0);
sim > char dud(...);
struct debug {
#ifdef LOCAL
  ~debug() { cerr << endl; }
  eni(!=) cerr << boolalpha << i;
  ris;
} eni(==) ris << range(begin(i), end(i));
}
sim, class b dor(pair<b, c> d) {
  ris << "(" << d.first << ", " << d.second << ")";
}
sim dor(rge<c> d) {
  *this << "[";
  for (auto it = d.b; it != d.e; ++it)
    *this << ", " + 2 * (it == d.b) << *it;
  ris << "]";
}
#else
  sim dor(const c &) { ris; }
#endif
}
;
#define imie(...) " [" << #__VA_ARGS__ ": " << (__VA_ARGS__) << "] "
#define fastio                                                                 \
  ios_base::sync_with_stdio(false);                                            \
  cin.tie(0);
#define endl '\n'
typedef long long ll;
typedef long double ld;
const ll MOD = 1e9 + 7;
const ll N = 1e5 + 10;
ll n;
vector<ll> v1(10005), v2(10005), v3(10005);
ll dp[100005][4];
// ll ans=0;
ll dfs(int x, int lastChoice) {
  if (x == n)
    return 0;
  if (dp[x][lastChoice] != -1)
    return dp[x][lastChoice];
  // debug()<<imie(ans);
  ll ans = 0;
  if (lastChoice != 1) {
    ans = max(ans, dfs(x + 1, 1) + v1[x]);
  }
  if (lastChoice != 2) {
    ans = max(ans, dfs(x + 1, 2) + v2[x]);
  }
  if (lastChoice != 3) {
    ans = max(ans, dfs(x + 1, 3) + v3[x]);
  }

  return dp[x][lastChoice] = ans;
}
int main() {

  fastio memset(dp, -1, sizeof dp);
  cin >> n;
  for (int i = 0; i < n; i++) {
    cin >> v1[i] >> v2[i] >> v3[i];
  }
  cout << dfs(0, 0) << endl;
  ;
  return 0;
}

Fixed submission:
#ifndef LOCAL
#pragma GCC optimize("O3")
#endif
#include "bits/stdc++.h"
using namespace std;
#define sim template <class c
#define ris return *this
#define dor > debug &operator<<
#define eni(x)                                                                 \
  sim > typename enable_if<sizeof dud<c>(0) x 1, debug &>::type operator<<(    \
            c i) {
sim > struct rge {
  c b, e;
};
sim > rge<c> range(c i, c j) { return rge<c>{i, j}; }
sim > auto dud(c *x) -> decltype(cerr << *x, 0);
sim > char dud(...);
struct debug {
#ifdef LOCAL
  ~debug() { cerr << endl; }
  eni(!=) cerr << boolalpha << i;
  ris;
} eni(==) ris << range(begin(i), end(i));
}
sim, class b dor(pair<b, c> d) {
  ris << "(" << d.first << ", " << d.second << ")";
}
sim dor(rge<c> d) {
  *this << "[";
  for (auto it = d.b; it != d.e; ++it)
    *this << ", " + 2 * (it == d.b) << *it;
  ris << "]";
}
#else
  sim dor(const c &) { ris; }
#endif
}
;
#define imie(...) " [" << #__VA_ARGS__ ": " << (__VA_ARGS__) << "] "
#define fastio                                                                 \
  ios_base::sync_with_stdio(false);                                            \
  cin.tie(0);
#define endl '\n'
typedef long long ll;
typedef long double ld;
const ll MOD = 1e9 + 7;
const ll N = 1e5 + 10;
ll n;
vector<ll> v1(100005), v2(100005), v3(100005);
ll dp[100005][4];
// ll ans=0;
ll dfs(int x, int lastChoice) {
  if (x == n)
    return 0;
  if (dp[x][lastChoice] != -1)
    return dp[x][lastChoice];
  // debug()<<imie(ans);
  ll ans = 0;
  if (lastChoice != 1) {
    ans = max(ans, dfs(x + 1, 1) + v1[x]);
  }
  if (lastChoice != 2) {
    ans = max(ans, dfs(x + 1, 2) + v2[x]);
  }
  if (lastChoice != 3) {
    ans = max(ans, dfs(x + 1, 3) + v3[x]);
  }

  return dp[x][lastChoice] = ans;
}
int main() {

  fastio memset(dp, -1, sizeof dp);
  cin >> n;
  for (int i = 0; i < n; i++) {
    cin >> v1[i] >> v2[i] >> v3[i];
  }
  cout << dfs(0, 0) << endl;
  ;
  return 0;
}