Submission #362278

#	Time	Username	Problem	Language	Result	Execution time	Memory
362278		saifu	Traffic (IOI10_traffic)	C++14	Compilation error	0 ms	0 KiB

traffic

// ----- In the name of ALLAH, the Most Gracious, the Most Merciful -----

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

#define sim template < class c
#define ris return * this
#define dor > debug & operator <<
#define eni(x) sim > typename \
  enable_if<sizeof dud<c>(0) x 1, debug&>::type operator<<(c i) {
sim > struct rge { c b, e; };
sim > rge<c> range(c i, c j) { return rge<c>{i, j}; }
sim > auto dud(c* x) -> decltype(cerr << *x, 0);
sim > char dud(...);
struct debug {
#ifdef LOCAL
~debug() { cerr << endl; }
eni(!=) cerr << boolalpha << i; ris; }
eni(==) ris << range(begin(i), end(i)); }
sim, class b dor(pair < b, c > d) {
  ris << "(" << d.first << ", " << d.second << ")";
}
sim dor(rge<c> d) {
  *this << "[";
  for (auto it = d.b; it != d.e; ++it)
    *this << ", " + 2 * (it == d.b) << *it;
  ris << "]";
}
#else
sim dor(const c&) { ris; }
#endif
};
#define deb(...) " [" << #__VA_ARGS__ ": " << (__VA_ARGS__) << "] "
#define int long long
#define endl "\n"
#define mod 1000000007
#define inf (int)1e18 

const int mxn = 1e6+10;
vector<int> g[mxn];
int people[mxn];
int dp[mxn];

void dfs(int v, int p=-1){
    dp[v] = people[v];

    for(int u : g[v]){
        if(u==p) continue;
        dfs(u,v);
        dp[v] += dp[u];
    }
}

int32_t main(){
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);

    int n; cin >> n;
    for(int i=0;i<n;i++) cin >> people[i];

    for(int i=0;i<n-1;i++){
        int u,v; cin >> u >> v;
        g[v].push_back(u);
        g[u].push_back(v);
    }

    int mn = inf;
    for(int i=0;i<n;i++){
        for(int j=0;j<n;j++) dp[i] = 0;
        dfs(i); 
        int mx = 0;
        for(int u : g[i]){
            mx = max(mx,dp[u]);
        }
        mn = min(mn,mx);
    }

    cout << mn << endl;
    
    return 0;
}

Compilation message (stderr)

/tmp/ccpbhB62.o: In function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'
/tmp/ccc5ASoK.o:traffic.cpp:(.text.startup+0x0): first defined here
/tmp/ccpbhB62.o: In function `main':
grader.cpp:(.text.startup+0xd9): undefined reference to `LocateCentre(int, int*, int*, int*)'
collect2: error: ld returned 1 exit status