#include<bits/stdc++.h> using namespace std; struct tt { int amount=0; int num=0; }; bool cmp(tt a,tt b) { if(a.amount>b.amount) return true; return false; } int main() { int n,m; tt arr[15]; cin>>n>>m; for(int i=1;i<=m;i++) { string s; cin>>s; arr[s[0]-'0'].amount++; arr[i].num=i; } sort(arr+1,arr+n+1,cmp); if(arr[1].amount==arr[2].amount) cout<<0-arr[1].amount; else cout<<arr[1].num; return 0; }