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Submission #1020674

# Submission time Handle Problem Language Result Execution time Memory
1020674 2024-07-12T08:18:14 Z pcc Fireworks (APIO16_fireworks) C++17
19 / 100
 40 ms 1884 KB 
#include <bits/stdc++.h>
using namespace std;

#define pii pair<int,int>
#define fs first
#define sc second
#define ll long long
const ll inf = 1e9;
const int mxn = 330;
int N,M;
vector<pii> tree[mxn];
ll dp[mxn][mxn],dep[mxn];
pii par[mxn];
bitset<mxn> boom;

void dfs(int now){
	fill(dp[now],dp[now]+mxn,inf);
	if(boom[now])dp[now][dep[now]] = 0;
	else fill(dp[now],dp[now]+mxn,0);
	for(auto [nxt,w]:tree[now]){
		//cerr<<now<<":"<<nxt<<endl;
		dep[nxt] = dep[now]+w;
		dfs(nxt);
		for(int i = 0;i<mxn;i++){
			dp[now][i] += dp[nxt][i];
		}
	}
	ll tmp[mxn];
	fill(tmp,tmp+mxn,inf);
	for(int i = 0;i<mxn;i++){
		for(int j = 0;j<mxn;j++){
			if(i-j>=-par[now].sc)tmp[i] = min(tmp[i],dp[now][j]+abs(i-j));
		}
	}
	//cerr<<now<<' '<<par[now].sc<<":";for(int j = 0;j<=30;j++)cerr<<(tmp[j]>=inf?-1:tmp[j])<<' ';cerr<<endl;
	for(int i = 0;i<mxn;i++)dp[now][i] = tmp[i];
	return;
}

int main(){
	ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
	cin>>N>>M;
	for(int i = 2;i<=N+M;i++){
		int p,c;
		cin>>p>>c;
		par[i] = pii(p,c);
		tree[p].push_back(pii(i,c));
	}
	for(int i = N+1;i<=N+M;i++)boom[i] = true;
	dfs(1);
	cout<<*min_element(dp[1],dp[1]+mxn)<<'\n';
	return 0;
}

Subtask #1
0 / 7.0

# Verdict Execution time Memory Grader output
1 Runtime error 1 ms 600 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #2
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 348 KB Output is correct
2 Correct 4 ms 572 KB Output is correct
3 Correct 6 ms 468 KB Output is correct
4 Correct 10 ms 860 KB Output is correct
5 Correct 12 ms 784 KB Output is correct
6 Correct 19 ms 776 KB Output is correct
7 Correct 15 ms 860 KB Output is correct
8 Correct 23 ms 856 KB Output is correct
9 Correct 28 ms 860 KB Output is correct
10 Correct 22 ms 860 KB Output is correct
11 Correct 23 ms 856 KB Output is correct
12 Correct 26 ms 1024 KB Output is correct
13 Correct 27 ms 1112 KB Output is correct
14 Correct 29 ms 1884 KB Output is correct
15 Correct 40 ms 1372 KB Output is correct
16 Correct 30 ms 1112 KB Output is correct
17 Correct 30 ms 1264 KB Output is correct
18 Correct 30 ms 1116 KB Output is correct
19 Correct 30 ms 1116 KB Output is correct

Subtask #3
0 / 29.0

# Verdict Execution time Memory Grader output
1 Runtime error 1 ms 600 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #4
0 / 45.0

# Verdict Execution time Memory Grader output
1 Runtime error 1 ms 600 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -