oj.uz

Submission #667309

# Submission time Handle Problem Language Result Execution time Memory
667309 2022-12-01T05:58:57 Z radal Fireworks (APIO16_fireworks) C++17
19 / 100
 24 ms 1080 KB 
#include <bits/stdc++.h>
#pragma GCC target("sse,sse2,avx2")
#pragma GCC optimize("unroll-loops,O2")
#define rep(i,l,r) for (int i = l; i < r; i++)
#define repr(i,r,l) for (int i = r; i >= l; i--)
#define X first
#define Y second
#define all(x) (x).begin() , (x).end()
#define pb push_back
#define endl '\n'
#define debug(x) cerr << #x << " : " << x << endl;
using namespace std;
typedef long long ll;
typedef long double ld;
typedef pair<int,int> pll;
constexpr int N = 3e2+15,mod = 1e9+7;
constexpr ll inf = 1e18+10;
inline int mkay(int a,int b){
    if (a+b >= mod) return a+b-mod;
   // if (a+b < 0) return a+b+mod;
    return a+b;
}

inline int poww(int a,int k){
    if (k < 0) return 0;
    int z = 1;
    while (k){
        if (k&1) z = 1ll*z*a%mod;
        a = 1ll*a*a%mod;
        k >>= 1;
    } 
    return z; 
}

vector<pll> adj[N];
ll h[N],val[N][2];
int n,m;
ll dp[N][N];

void pre(int v){
	if (v > n) val[v][0] = val[v][1] = h[v];
	else{
		val[v][1] = -inf;
		val[v][0] = inf;
	}
	for (pll p : adj[v]){
		int u = p.X;
		h[u] = h[v]+p.Y;
		pre(u);
		val[v][1] = max(val[v][1],val[u][1]);
		val[v][0] = min(val[v][0],val[u][0]);
	}
}

void dfs(int v){
	for (auto [u,w] : adj[v]) dfs(u);
	rep(i,0,N){
		if (v > n && i){
			dp[v][i] = inf;
			continue;
		}
		dp[v][i] = 0;
		for (auto [u,w] : adj[v]){
			ll mi = inf;
			rep(j,0,i+1){
				ll cost;
				if (j+w <= i) cost = i-j-w;
				else cost = j+w-i;
				mi = min(mi,dp[u][j]+cost);
			}
			dp[v][i] += mi;
		}
	}
}

int main(){
	ios :: sync_with_stdio(0); cin.tie(0);
	cin >> n >> m;
	rep(i,2,n+m+1){
		int p,w;
		cin >> p >> w;
		adj[p].pb({i,w});
	}
	pre(1);
	ll out = inf;
	dfs(1);
	rep(i,0,N) out = min(out,dp[1][i]);
	cout << out;
}

Subtask #1
0 / 7.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 340 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 2 ms 340 KB Output is correct
3 Correct 6 ms 468 KB Output is correct
4 Correct 11 ms 468 KB Output is correct
5 Correct 9 ms 596 KB Output is correct
6 Correct 9 ms 596 KB Output is correct
7 Correct 10 ms 724 KB Output is correct
8 Correct 18 ms 724 KB Output is correct
9 Correct 20 ms 724 KB Output is correct
10 Correct 20 ms 860 KB Output is correct
11 Correct 24 ms 864 KB Output is correct
12 Correct 18 ms 976 KB Output is correct
13 Correct 17 ms 1004 KB Output is correct
14 Correct 21 ms 1000 KB Output is correct
15 Correct 24 ms 1076 KB Output is correct
16 Correct 19 ms 1080 KB Output is correct
17 Correct 20 ms 980 KB Output is correct
18 Correct 21 ms 988 KB Output is correct
19 Correct 19 ms 1032 KB Output is correct

Subtask #3
0 / 29.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 340 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 340 KB Output isn't correct
2 Halted 0 ms 0 KB -