Submission #477286

#	Time	Username	Problem	Language	Result	Execution time	Memory
477286		Tsiannis	Traffic (IOI10_traffic)	C++17	Compilation error	0 ms	0 KiB

traffic

#include<bits/stdc++.h>
using namespace std;
#define INF 100000000000
typedef long long ll;
#define MAXN 1000000
ll P[MAXN],D[MAXN],S[MAXN],pre[MAXN];
    ll sum=0;
int LocateCentre(ll N,ll P[],ll S[],ll D[])
{
     ll mn=INF;
    ll index;
    for (int i=0;i<N;i++)
    {
        ll d=(sum-P[i])/2;
        if (abs(pre[i]-d-P[i])<mn)
        {
            mn=abs(pre[i]-d-P[i]);
            index=i;
        }
    }
    return index;
}
int main()
{
    ll N;
    cin>>N;


    for (int i=0;i<N;i++)
    {
    cin>>P[i];
    sum+=P[i];
    pre[i]=sum;
    }
    for (int i=0;i<N-1;i++)
    {
        cin>>S[i]>>D[i];
    }
   cout<<LocateCentre(N,P,S,D)<<endl;
    return 0;
}

Compilation message (stderr)

traffic.cpp: In function 'int LocateCentre(ll, ll*, ll*, ll*)':
traffic.cpp:21:12: warning: 'index' may be used uninitialized in this function [-Wmaybe-uninitialized]
   21 |     return index;
      |            ^~~~~
/usr/bin/ld: /tmp/ccqHhWc9.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccchkW7a.o:traffic.cpp:(.text.startup+0x0): first defined here
/usr/bin/ld: /tmp/ccqHhWc9.o: in function `main':
grader.cpp:(.text.startup+0xe1): undefined reference to `LocateCentre(int, int*, int*, int*)'
collect2: error: ld returned 1 exit status