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Submission #355502

# Submission time Handle Problem Language Result Execution time Memory
355502 2021-01-22T14:50:33 Z deadeye Traffic (IOI10_traffic) C++14
0 / 100
 15 ms 23788 KB 
#include "traffic.h"
#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define fi first
#define si second
typedef pair<int,int> pi;
 
#ifdef LOCAL
#define debug(...) __f(#__VA_ARGS__, __VA_ARGS__)
#else
#define debug(...) 69
#endif
template <typename Arg>
void __f(string name, Arg arg) {
	cerr << name << " = " << arg << endl;
}
template <typename Head, typename... Tail>
void __f(string names, Head head, Tail... tail) {
	string cur = "";
	for (auto ch: names){if(ch==','){break;}else{cur+=ch;}}
	string nxt = names.substr(cur.size()+2);
	cerr << cur << " = " << head << ", ";
	__f(nxt, tail...);
}
 
const int MXN = 1000005, INF = 1e9;
int sz[MXN], ans[MXN], ret = INF, total, num[MXN];
vector<int> adj[MXN];
 
void dfs(int x, int p) {
	for (auto i: adj[x]) if (i != p) {
		dfs(i, x);
		num[x] += num[i] + sz[i];
		ans[x] = max(ans[x], num[x]);
	}
	ans[x] = max(ans[x], total - num[x] - sz[x]);
}
 
int LocateCentre(int N, int P[], int S[], int D[]) {
	for (int i = 0; i < N; ++i) {
		total += P[i];
		sz[i] = P[i];
	}
	for (int i = 0; i < N - 1; ++i) {
		adj[S[i]].pb(D[i]);
		adj[D[i]].pb(S[i]);
	}
	dfs(0, 0);
	for (int i = 0; i < N; ++i) {
		ret = min(ret, ans[i]);
		// debug(ans[i], i);
	}
	return ret;
}

Subtask #1
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 23788 KB Output is correct
2 Incorrect 15 ms 23788 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 23788 KB Output is correct
2 Incorrect 15 ms 23788 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 23788 KB Output is correct
2 Incorrect 15 ms 23788 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #4
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 23788 KB Output is correct
2 Incorrect 15 ms 23788 KB Output isn't correct
3 Halted 0 ms 0 KB -