#include <bits/stdc++.h>
using namespace std;
#define int long long
#define pb push_back
#define mp make_pair
#define pii pair<int, int>
#define fr first
#define sc second
#define all(a) a.begin(),a.end()
int LocateCentre(int n, int p[], int s[], int d[]) {
vector <int> graph[n];
for(int i = 0; i < n - 1; i++) {
graph[s[i]].pb(d[i]);
graph[d[i]].pb(s[i]);
}
vector <int> forward(n), backward(n);
forward[0] = p[0];
for(int i = 1; i < n; i++) {
forward[i] = forward[i - 1] + p[i];
}
backward[n - 1] = p[n - 1];
for(int i = n - 2; i >= 0; i--) {
backward[i] = backward[i + 1] + p[i];
}
int mi = backward[0] - p[0];
int curr = 0;
for(int i = 1; i < n; i++) {
int d = backward[i] - p[i] + forward[i - 1];
if(d < mi) {
mi = d;
curr = i;
}
}
// cout << mi << " " << curr << endl;
return curr;
}
// signed main() {
// int n = 3;
// int p[] = {1,3,2};
// int d[] = {1,2};
// int s[] = {0,1};
// LocateCentre(n,p, s, d);
// }
Compilation message
/tmp/cchThOmu.o: In function `main':
grader.cpp:(.text.startup+0xd9): undefined reference to `LocateCentre(int, int*, int*, int*)'
collect2: error: ld returned 1 exit status
