oj.uz

Submission #941071

# Submission time Handle Problem Language Result Execution time Memory
941071 2024-03-08T06:26:04 Z GrindMachine Fireworks (APIO16_fireworks) C++17
0 / 100
 15 ms 2648 KB 
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>

using namespace std;
using namespace __gnu_pbds;

template<typename T> using Tree = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
typedef long long int ll;
typedef long double ld;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;

#define fastio ios_base::sync_with_stdio(false); cin.tie(NULL)
#define pb push_back
#define endl '\n'
#define sz(a) (int)a.size()
#define setbits(x) __builtin_popcountll(x)
#define ff first
#define ss second
#define conts continue
#define ceil2(x,y) ((x+y-1)/(y))
#define all(a) a.begin(), a.end()
#define rall(a) a.rbegin(), a.rend()
#define yes cout << "Yes" << endl
#define no cout << "No" << endl

#define rep(i,n) for(int i = 0; i < n; ++i)
#define rep1(i,n) for(int i = 1; i <= n; ++i)
#define rev(i,s,e) for(int i = s; i >= e; --i)
#define trav(i,a) for(auto &i : a)

template<typename T>
void amin(T &a, T b) {
    a = min(a,b);
}

template<typename T>
void amax(T &a, T b) {
    a = max(a,b);
}

#ifdef LOCAL
#include "debug.h"
#else
#define debug(x) 42
#endif

/*



*/

const int MOD = 1e9 + 7;
const int N = 5e3 + 5;
const int inf1 = int(1e9) + 5;
const ll inf2 = ll(1e18) + 5;
const int M = 505;

ll n,m;
vector<pll> adj[N];
ll dp[N][M];

void dfs1(ll u){
    if(adj[u].empty()){
        rep(i,M) dp[u][i] = inf2;
        dp[u][0] = 0;
        return;
    }

    for(auto [v,w] : adj[u]){
        dfs1(v);
    }

    rep(i,M){
        for(auto [v,w] : adj[u]){
            ll mn = inf2;
            rep(j,M){
                amin(mn,dp[v][j]+abs(j+w-i));
            }
            dp[u][i] += mn;
        }
    }
}

void solve(int test_case)
{
    cin >> n >> m;
    for(int i = 2; i <= n+m; ++i){
        ll p,w; cin >> p >> w;
        adj[p].pb({i,w});
    }

    dfs1(1);

    ll ans = inf2;
    rep(i,M) amin(ans,dp[1][i]);

    cout << ans << endl;
}

int main()
{
    fastio;

    int t = 1;
    // cin >> t;

    rep1(i, t) {
        solve(i);
    }

    return 0;
}

Subtask #1
0 / 7.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 348 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 604 KB Output is correct
2 Correct 9 ms 600 KB Output is correct
3 Incorrect 15 ms 2648 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #3
0 / 29.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 348 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 45.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 348 KB Output isn't correct
2 Halted 0 ms 0 KB -