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CPP0205.cpp
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CPP0205.cpp
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#include <bits/stdc++.h>
#define ll long long
#define endl '\n'
#define chk cout << "<< * checked * >>" << endl;
#define db cout << '<' << "i" << '=' << i << '>' << endl
using namespace std;
vector<long long> s(1000000, 0);
void sieve (long long n) {
s[0] = 1, s[1] = 1;
for (long long i=2; i<=n; i++){
if(s[i] == 0){
for (long long j=i+i; j<=n; j+=i) {
s[j] = 1;
}
}
}
}
long long checkNT(long long n){
if(n <= 1) return 0;
if(n <= 3) return 1;
if(n % 2 == 0 || n % 3 == 0) return 0;
for(long long i=2; i<=sqrt(n); i++){
if(n % i == 0) return 0;
}
return 1;
}
long long calSum(long long n){
long long m = n, sum = 0;
while (m != 0) {
sum += m%10;
m /= 10;
}
return sum;
}
long long BCNN(long long a, long long b){
return a*b / __gcd(a, b);
}
long long cal(long long x, long long a){
long long ans = x;
long long tmp = 0;
for(int i=0; i<=20; i++){
if(pow(10, i) > x){
tmp = i;
break;
}
}
a--;
while(a--){
ans = ans*pow(10, tmp)+x;
}
// cout << ans << endl;
return ans;
}
long long gcd(long long x,long long y){
if (y==0) return x;
return gcd(y,x%y);
}
int main () {
ios_base::sync_with_stdio(0);
cin.tie(NULL);
cout.tie(NULL);
long long t;
cin >> t;
while(t --){
long long m; cin >> m;
long long max = 0;
for(long long i=0; i<m; i++){
long long tmp;
cin >> tmp;
if(tmp > max) max = tmp;
}
cout << max << endl;
}
return 0;
}