Submission #137100

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
137100	2019-07-27 05:23:21	KLPP	Unija (COCI17_unija)	C++14	100 / 100	430 ms	31096 KiB

unija

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#include<bits/stdc++.h>
using namespace std;
typedef long long int lld;
typedef pair<lld,lld> pii;
#define rep(i,a,b) for(int i=a;i<b;i++)
int main(){
  int n;
  scanf("%d",&n);
  pii arr[n];
  rep(i,0,n){
    scanf("%lld %lld",&arr[i].first,&arr[i].second);
    arr[i].first/=2;
    arr[i].second/=2;
  }
  sort(arr,arr+n);
  reverse(arr,arr+n);
  lld max_second=0;
  lld ans=0;
  rep(i,0,n){
    ans+=arr[i].first*(max(max_second,arr[i].second)-max_second);
    max_second=max(max_second,arr[i].second);
  }
  printf("%lld\n",ans*4);
  return 0;
}
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

unija.cpp: In function 'int main()':
unija.cpp:10:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d",&n);
   ~~~~~^~~~~~~~~
unija.cpp:13:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%lld %lld",&arr[i].first,&arr[i].second);
     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• 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
• Subtask 10: 10 / 10