#pragma comment(linker, "/STACK:1024000000,1024000000")#include<cstdio>#include<cstring>#include<cmath>#include<algorithm>#include<vector>#include<map>#include<set>#include<queue>#include<stack>#include<ctime>#include<iostream>using namespace std;typedef long long LL;const double pi=acos(-1.0);void File(){    freopen("D:\\in.txt","r",stdin);    freopen("D:\\out.txt","w",stdout);}template <class T>inline void read(T &x){    char c = getchar();    x = 0;    while(!isdigit(c)) c = getchar();    while(isdigit(c))    {        x = x * 10 + c - ‘0‘;        c = getchar();    }}int n;int L[100010],R[100010];int sumL,sumR;int ans,idx;int main(){    cin>>n;    for(int i=1;i<=n;i++)    {        cin>>L[i]>>R[i];        sumL=sumL+L[i];        sumR=sumR+R[i];    }    ans=abs(sumR-sumL);    for(int i=1;i<=n;i++)    {        sumL=sumL-L[i];        sumR=sumR-R[i];        sumL=sumL+R[i];        sumR=sumR+L[i];        if(abs(sumR-sumL)>ans)        {            ans=abs(sumR-sumL);            idx=i;        }        sumL=sumL-R[i];        sumR=sumR-L[i];        sumL=sumL+L[i];        sumR=sumR+R[i];    }    cout<<idx<<endl;    return 0;}