AtCoder Beginner Contest 171

#include<bits/stdc++.h>
 
using namespace std;
 
int main(){
 char c;
  cin>>c;
  if(c>='A'&&c<='Z') cout<<"A";
  else cout<<"a"<<endl;
}

#include<bits/stdc++.h>
 
using namespace std;
int a[1111];
int main(){
  int n,k;
  cin>>n>>k;
  for(int i=0;i<n;i++){
  cin>>a[i];
  }
  sort(a,a+n);
  int tot = 0;
  for(int i=0;i<k;i++)
    tot += a[i];
  cout<<tot<<endl;
  }

#include <bits/stdc++.h>
 
 
using namespace std;
typedef long long ll;
const ll INF = 1e9 + 7;
 
int main(){
    ll n;
    cin>>n;
    string ans;
    while(n){
        n--;
        ans=char('a'+(n%26))+ans;
        n/=26;
    }
    cout<<ans<<endl;
    return 0;
}

#include <stdio.h>
#define LL long long
#define maxn 100010
LL sum,a[maxn],cnt[maxn];
int main(){
	int i,n,q,b,c;
	scanf("%d",&n);
	for(i=1;i<=n;i++)scanf("%lld",&a[i]),sum+=a[i],cnt[a[i]]++;
	scanf("%d",&q);
	while(q--){
		scanf("%d%d",&b,&c);
		sum-=cnt[b]*b;
		sum+=cnt[b]*c;
		cnt[c]+=cnt[b],cnt[b]=0;
		printf("%lld\n",sum);
	}
	return 0;
}