#include <bits/stdc++.h>
using namespace std;
template<class t> inline t read(t &x){
    char c=getchar();bool f=0;x=0;
    while(!isdigit(c)) f|=c=='-',c=getchar();
    while(isdigit(c)) x=(x<<1)+(x<<3)+(c^48),c=getchar();
    if(f) x=-x;return x;
}
template<class t> inline void write(t x){
    if(x<0) putchar('-'),write(-x);
    else{if(x>9) write(x/10);putchar('0'+x%10);}
} 

#define int __int128

int n,m,s,a,b,x,y;

int gcd(int x,int y){
	return x?gcd(y%x,x):y;
}

int exgcd(int a,int b,int &x,int &y){
	if(!b) return x=1,y=0,a;
	int g;return g=exgcd(b,a%b,y,x),y-=a/b*x,g;
}

auto solve(int a,int b,int c){
	int x,y,g;
	g=exgcd(a,b,x,y);
	if(c%g) return pair<int,int>{-1,-1};
	x*=c/g;
	x=(x%b+b)%b;
	y=(c-a*x)/b;
	return pair<int,int>{x,y};
}

signed main(){
	read(n);read(m);
	for(int i=1,x;i<=n;i++) read(x),s=(s+x)%m;
	int A=n,B=n*(n+1)/2;
	int g=gcd(A,B),ans=gcd(g,m);
	pair<int,int> a=solve(g,m,ans-s);
	pair<int,int> b=solve(A,B,(a.first+m*n)*g);
	write(ans);puts("");
	write(b.first%m);putchar(' ');write(b.second%m);
}