/*

* Created:     2016年03月30日 23时01分45秒 星期三

* Author:      Akrusher

*

*/

#include <cstdio>

#include <cstdlib>

#include <cstring>

#include <cmath>

#include <ctime>

#include <iostream>

#include <algorithm>

#include <string>

#include <vector>

#include <deque>

#include <list>

#include <set>

#include <map>

#include <stack>

#include <queue>

#include <numeric>

#include <iomanip>

#include <bitset>

#include <sstream>

#include <fstream>

using namespace std;

#define rep(i,a,n) for (int i=a;i<n;i++)

#define per(i,a,n) for (int i=n-1;i>=a;i--)

#define in(n) scanf("%d",&(n))

#define in2(x1,x2) scanf("%d%d",&(x1),&(x2))

#define inll(n) scanf("%I64d",&(n))

#define inll2(x1,x2) scanf("%I64d%I64d",&(x1),&(x2))

#define inlld(n) scanf("%lld",&(n))

#define inlld2(x1,x2) scanf("%lld%lld",&(x1),&(x2))

#define inf(n) scanf("%f",&(n))

#define inf2(x1,x2) scanf("%f%f",&(x1),&(x2))

#define inlf(n) scanf("%lf",&(n))

#define inlf2(x1,x2) scanf("%lf%lf",&(x1),&(x2))

#define inc(str) scanf("%c",&(str))

#define ins(str) scanf("%s",(str))

#define out(x) printf("%d\n",(x))

#define out2(x1,x2) printf("%d %d\n",(x1),(x2))

#define outf(x) printf("%f\n",(x))

#define outlf(x) printf("%lf\n",(x))

#define outlf2(x1,x2) printf("%lf %lf\n",(x1),(x2));

#define outll(x) printf("%I64d\n",(x))

#define outlld(x) printf("%lld\n",(x))

#define outc(str) printf("%c\n",(str))

#define pb push_back

#define mp make_pair

#define fi first

#define se second

#define SZ(x) ((int)(x).size())

#define mem(X,Y) memset(X,Y,sizeof(X));

typedef vector<int> vec;

typedef long long ll;

typedef pair<int,int> P;

const int dx[]={,,-,},dy[]={,,,-};

const int INF=0x3f3f3f3f;

ll mod;

ll powmod(ll a,ll b) {ll res=;a%=mod;for(;b;b>>=){if(b&)res=res*a%mod;a=a*a%mod;}return res;}//快速幂计算

const bool AC=true;

int main()

{

    int t,n;

    ll ans,a,b;

    in(t); //别忘了输入

    while(t--){

    inlld(mod);

    in(n);

    ans=;

    rep(i,,n){

    inlld2(a,b);

    ans=(ans+powmod(a,b))%mod;

    }

    outlld(ans);

    }

    return ;

}