Submission #533764

#	Time	Username	Problem	Language	Result	Execution time	Memory
533764		PixelCat	Worst Reporter 4 (JOI21_worst_reporter4)	C++14	14 / 100	156 ms	196740 KiB

worst_reporter2

/*       code by the cute PixelCat owo       */
/*   as cute as nacho neko (aka. my wife)!   */
// #pragma GCC
// optimize("O4,unroll-loops,no-stack-protector")
#include <bits/stdc++.h>
#define int LL  //__int128
#define double long double
using namespace std;
using LL = long long;
using uLL = unsigned long long;
using pii = pair<int, int>;

#define For(i, a, b) for (int i = a; i <= b; i++)
#define Fors(i, a, b, s) for (int i = a; i <= b; i += s)
#define Forr(i, a, b) for (int i = a; i >= b; i--)
#define F first
#define S second
#define L(id) (id * 2 + 1)
#define R(id) (id * 2 + 2)
#define LO(x) (x & (-x))

#define eb emplace_back
#define all(x) x.begin(), x.end()
#define sz(x) ((int)x.size())
#define mkp make_pair

// #define MOD (int)(998244353)
#define MOD (int)(1e9 + 7)
#define INF (int)(9000000000000000000ll)  // 9e18
#define EPS (1e-6)

#ifdef NYAOWO
#include "library/debug.hpp"
inline void USACO(const string &s) {
    cerr << "USACO: " << s << "\n";
}

#else
#define debug(...)
inline void timer() {}
inline void USACO(const string &s) {
    freopen((s + ".in").c_str(), "r", stdin);
    freopen((s + ".out").c_str(), "w", stdout);
}

#endif

inline void NYA() {
    ios::sync_with_stdio(false);
    cin.tie(0);
}
inline int gcd(int a, int b) {
    return __gcd(a, b);
}
inline int lcm(int a, int b) {
    return a / gcd(a, b) * b;
}
int fpow(int b, int p, const int &mod) {
    int ans = 1;
    while (p) {
        if (p & 1) ans = ans * b % mod;
        p /= 2;
        b = b * b % mod;
    }
    return ans;
}
int fpow(int b, int p) {
    return fpow(b, p, MOD);
}
template <typename T>
inline void chmin(T &_a, const T &_b) {
    if (_b < _a) _a = _b;
}
template <typename T>
inline void chmax(T &_a, const T &_b) {
    if (_b > _a) _a = _b;
}
// mt19937_64 rng(
//     chrono::steady_clock::now().time_since_epoch().count());

const int MAXN=5010;

int a[MAXN];
int x[MAXN];
int c[MAXN];
int dp[MAXN][MAXN];

int32_t main() {
    NYA();
    // nyaacho >/////<
    // miku sama bless me >/////<
    int n; cin>>n;
    vector<int> al;
    For(i,1,n){
        cin>>a[i]>>x[i]>>c[i];
        al.eb(x[i]);
    }
    sort(all(al));
    al.erase(unique(all(al)),al.end());
    int m=sz(al);
    For(i,1,n){
        x[i]=upper_bound(all(al),x[i])-al.begin();
        For(j,1,m) if(j!=x[i]) dp[i][j]=c[i];
    }
    Forr(i,n,2){
        Forr(j,m-1,1) chmin(dp[i][j],dp[i][j+1]);
        For(j,1,m) dp[a[i]][j]+=dp[i][j];
    }
    int ans=INF;
    For(i,1,m) chmin(ans,dp[1][i]);
    cout<<ans<<"\n";
    return 0;
}

• Subtask 1: 14 / 14
• Subtask 2: 0 / 65
• Subtask 3: 0 / 21