Submission #100976

#	Time	Username	Problem	Language	Result	Execution time	Memory
100976		KLPP	Kisik (COCI19_kisik)	C++14	90 / 90	501 ms	32360 KiB

kisik

#include<bits/stdc++.h>

using namespace std;
typedef long long int lld;

int main(){
  int n,k;
  scanf("%d %d",&n,&k);
  pair<lld,lld> arr[n];
  for(int i=0;i<n;i++){
    scanf("%lld %lld",&arr[i].second,&arr[i].first);
  }
  sort(arr,arr+n);
  priority_queue<int> pq;
  lld sum=0;
  lld ans=1000000000000000000;
  for(int i=0;i<n;i++){
    pq.push(arr[i].second);
    sum+=arr[i].second;
    if(pq.size()>k){
      sum-=pq.top();
      pq.pop();
    }
    if(pq.size()==k){
      ans=min(ans,sum*arr[i].first);
    }
  }cout<<ans<<endl;
	return 0;
}

Compilation message (stderr)

kisik.cpp: In function 'int main()':
kisik.cpp:20:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     if(pq.size()>k){
        ~~~~~~~~~^~
kisik.cpp:24:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     if(pq.size()==k){
        ~~~~~~~~~^~~
kisik.cpp:8:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d",&n,&k);
   ~~~~~^~~~~~~~~~~~~~~
kisik.cpp:11:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%lld %lld",&arr[i].second,&arr[i].first);
     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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