DEMHS C++

#include <bits/stdc++.h>
using namespace std;

int n, q;
int a, b, x;
int nam[100001], nu[1000001], gay[100001];

void nhap()
{
    cin>>n>>q;
    for (int i = 1; i<=n;i++)
    {
        cin>>x;
        if (x==1) nam[i]=nam[i-1]+1;
        else nam[i]=nam[i-1];

        if (x==2) nu[i]=nu[i - 1]+1;
        else nu[i]=nu[i - 1];

        if (x==3) gay[i] = gay[i-1]+1;
        else gay[i]=gay[i-1];
    }
}
void xuLi()
{
    for (int i = 1; i <= q; i++)
    {
        cin>>a>>b;
        cout<<(nam[b]-nam[a-1])<<" "<<(nu[b]-nu[a-1])<<" "<<(gay[b]-gay[a-1])<<endl;
    }
}
int main()
{
    freopen("demhs.inp","r",stdin);
    freopen("demhs.out","w",stdout);
    ios_base::sync_with_stdio(0);
    cin.tie(0);cout.tie(0);
    nhap();
    xuLi();
    return 0;
}