Submission #373308

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
373308	2021-03-04T04:45:14 Z	No_Ice	Traffic (IOI10_traffic)	C++17	Compilation error	0 ms	0 KB

traffic

#include <bits/stdc++.h>
using namespace std;

#define ll long long

const int mxN = 1e6;
const ll INF = 1e17;

int N;
vector<int> adj[mxN];
ll fans[mxN];
ll ans = INF;

ll dfs(int u, int p = -1) {
	ll sum = 0;
	for (int v : adj[u]) {
		if (v != p) {
			ll c_sum = 0;
			c_sum += fans[v];
			c_sum += dfs(v, u);
			sum = max(sum, c_sum);
		}
	}

	return sum;
}

int main()
{
	ios::sync_with_stdio(0); cin.tie(0);

	cin >> N;

	for (int i=0; i < N; i++) {
		cin >> fans[i];
	}

	for (int i=0; i < N-1; i++) {
		int u, v;
		cin >> u >> v;

		adj[u].push_back(v);
		adj[v].push_back(u);
	}

	int ans1 = 0;
	for (int i=0; i < N; i++) {
		ll temp = dfs(i);
		if (temp < ans) {
			ans = temp;
			ans1 = i;
		}
	}

	cout << ans1 << '\n';

	return 0;
}

Compilation message

/tmp/ccE9DB2K.o: In function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'
/tmp/cc5kjz8X.o:traffic.cpp:(.text.startup+0x0): first defined here
/tmp/ccE9DB2K.o: In function `main':
grader.cpp:(.text.startup+0xd9): undefined reference to `LocateCentre(int, int*, int*, int*)'
collect2: error: ld returned 1 exit status