제출 #137098

#제출 시각아이디문제언어결과실행 시간메모리
137098KLPPUnija (COCI17_unija)C++14
80 / 100
1082 ms29560 KiB
#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; cin>>n; pii arr[n]; rep(i,0,n){ cin>>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); } cout<<ans*4<<endl; return 0; }
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