Submission #738625

#	Time	Username	Problem	Language	Result	Execution time	Memory
738625		Toxtaq	Traffic (IOI10_traffic)	C++17	Compilation error	0 ms	0 KiB

traffic

#include<bits/stdc++.h>
using namespace std;
vector<vector<int>>g;
vector<int>fans;
vector<int>sub, res;
void calc(int node, int par){
    sub[node] = fans[node];
    for(int v : g[node]){
        if(v != par){
            calc(v, node);
            sub[node] += sub[v];
        }
    }
}
void traverse(int node, int par){
    res[node] = max(res[node], sub[par] - sub[node]);
    for(int v : g[node]){
        if(v == par)continue;
        res[node] = max(sub[v], res[node]);
    }
    for(int v : g[node]){
        if(v != par){
            traverse(v, node);
        }
    }
}
int LocateCentre(int n, vector<int>p, vector<int>s, vector<int>d){
    g.resize(n);
    fans.resize(n);
    res.resize(n);
    sub.resize(n);
    for(int i = 0;i < n - 1;++i){
        g[s[i]].push_back(d[i]);
        g[d[i]].push_back(s[i]);
    }
    for(int i = 0;i < n;++i){
        fans[i] = p[i];
    }
    calc(1, 1);
    traverse(1, 1);
    int mn = 1e9, id = -1;
    for(int i = 0;i < n;++i){
        if(mn > res[i]){
            mn = res[i];
            id = i;
        }
    }
    return id;
}
//int main()
//{
//    int n;
//    cin >> n;
//    g.resize(n);
//    fans.resize(n);
//    res.resize(n);
//    sub.resize(n);
//    for(int i = 0;i < n - 1;++i){
//        int u, v;
//        cin >> u >> v;
//        g[u].push_back(v);
//        g[v].push_back(u);
//    }
//    for(int i = 0;i < n;++i){
//        cin >> fans[i];
//    }
//    calc(1, 1);
//    traverse(1, 1);
//    int mn = 1e9, id = -1;
//    for(int i = 0;i < n;++i){
//        if(mn > res[i]){
//            mn = res[i];
//            id = i;
//        }
//    }
//    cout << id;
//}

Compilation message (stderr)

/usr/bin/ld: /tmp/ccHkUPxr.o: in function `main':
grader.cpp:(.text.startup+0xe1): undefined reference to `LocateCentre(int, int*, int*, int*)'
collect2: error: ld returned 1 exit status