Submission #318884

#	Time	Username	Problem	Language	Result	Execution time	Memory
318884		neki	Simfonija (COCI19_simfonija)	C++14	55 / 110	98 ms	4356 KiB

simfonija

#include <bits/stdc++.h>
#define loop(i, a, b) for(long long i=a;i<b;i++)
#define pool(i, a, b) for(long long i=a-1;i>=b;i--)
#define fore(i, a) for(auto&& i:a)
#define fi first
#define se second
#define ps(a) push_back(a)
#define pb(a) pop_back(a)
#define sc scanf
#define vc vector
#define pa pair<ll, ll>
#define ll long long
#define lb lower_bound
#define ub upper_bound
#define all(a) a.begin(), a.end()
#define llmax LLONG_MAX/2
#define llmin -LLONG_MAX/2
using namespace std;
#define mn 100100
#define pa pair<ll, ll>
#define ld long double 
ll a[mn], b[mn], srt[mn];
int main(){
    ll n, k;cin>> n >> k;
    loop(i, 0, n) cin >> a[i];
    loop(i, 0, n) cin >> b[i];
    loop(i, 0, n) srt[i+1]=b[i]-a[i];
    sort(srt+1, srt+n+1);
    ll j=0, ans=llmax, l=0, r=k, cur=0;
    loop(i, 1, n-k+1) cur+=srt[i]-srt[1];
    loop(j, 0, n){
        ll i=srt[j+1];
        if(j!=0) cur-=(n-j-j+l-r) * (srt[j+1]-srt[j]);
        while(l+1<=j and r>0 and i-srt[l+1]>=srt[n+1-r]-i) cur-=srt[n+1-r]+srt[l+1]-2 * i,l++, r--;
        
        //cout << i << " "<<cur <<" "<<j<< " "<<l << " "<<r<<endl;
        ans=min(ans, cur);
    }
    cout << ans <<endl;
}

Compilation message (stderr)

simfonija.cpp: In function 'int main()':
simfonija.cpp:29:8: warning: unused variable 'j' [-Wunused-variable]
   29 |     ll j=0, ans=llmax, l=0, r=k, cur=0;
      |        ^

• Subtask 1: 11 / 11
• Subtask 2: 11 / 11
• Subtask 3: 11 / 11
• Subtask 4: 11 / 11
• Subtask 5: 0 / 11
• Subtask 6: 0 / 11
• Subtask 7: 0 / 11
• Subtask 8: 0 / 11
• Subtask 9: 0 / 11
• Subtask 10: 11 / 11