#include<bits/stdc++.h>
#define forn(i,n) for(int i = 0;i < (n);i++)
#define Forn(i,n) for(int i = 1;i <= (n);i++)
#define all(p) p.begin(),p.end()
#define pb push_back
#define F first
#define S second
#define rz resize
#define sz(x) x.size()
#define int long long
#define vi vector<int>
#define pii pair<int,int>
using namespace std;
const int N = 2e5+9;
const int INF = 1e18+9;
int n,k;
vector<pii> a;
#define double long double
bool pii operator<(const pii &x,const pii &y){return (x.F < y.F || (x.F == y.F && x.S > y.S));}
void solve(){
cin >> n >> k;
a.rz(n);
forn(i,n){
cin >> a[i].S >> a[i].F;
if(a[i].F == -1) a[i].F = 1e18+9;
}
sort(all(a));
double ans = INF;
double res = 0;
for(int i = 0;i <= k;i++){
if(i) {
res += (double)a[i-1].F/(i);
}
vi b;
for(int j = i;j < n;j++){
b.pb(a[j].S);
}
sort(all(b));
int tr = 0;
for(int r = 0;r < k-i;r++){
tr += b[r];
}
cout << res << ' ' << tr << '\n';
ans = min(ans,(double) res + (double)tr / (i+1));
}
cout << ans << '\n';
}
signed main(){
cin.tie(NULL);
cout.tie(NULL);
ios_base::sync_with_stdio(0);
cout << fixed << setprecision(15);
solve();
return 0;
}
Compilation message
Main.cpp:21:10: error: invalid declarator before 'operator'
21 | bool pii operator<(const pii &x,const pii &y){return (x.F < y.F || (x.F == y.F && x.S > y.S));}
| ^~~~~~~~
