#include<bits/stdc++.h>
using namespace std;
#define int long long
#define ff first
#define ss second
#define pb push_back
const int N=3e5+5;
int a[N];
int b[N];
signed main(){
int n,k;
cin>>n>>k;
for(int i=1;i<=n;i++)cin>>a[i]>>b[i];
vector<int>v;
for(int i=1;i<=n;i++){
v.pb(a[i]);
}
int s=0;
sort(v.begin(),v.end());
for(int i=0;i<k;i++){
s+=v[i];
}
cout<<fixed<<setprecision(10)<<double(s)<<endl;;
}
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |