Submission #147245

#	Time	Username	Problem	Language	Result	Execution time	Memory
147245		SeekingOblivion	Cover (COCI18_cover)	C++14	120 / 120	11 ms	504 KiB

cover

//#include<fstream>
#include<queue>
#include<algorithm>
#include<iostream>
#define fin cin
#define fout cout
using namespace std;
//ifstream fin("date.in");
//ofstream fout("date.out");
int i,a,b,n,m,j;
long long sol[5010];
pair<int,int> v[5010],d[5010];
int main()
{
    fin>>n;
    for(i=1;i<=n;i++)
    {
        fin>>a>>b;
        if(a<0) a=-a;
        if(b<0) b=-b;
        v[i].first=a;v[i].second=b;
    }
    sort(v+1,v+n+1);
    for(i=1;i<=n;i++)
    {
        while(m>0&&d[m].second<v[i].second) m--;
        d[++m]=v[i];
    }
    for(i=1;i<=m;i++) sol[i]=9223372036854775807;
    for(i=1;i<=m;i++)
        for(j=i;j>=1;j--)
            sol[i]=min(sol[j-1]+1LL*d[i].first*d[j].second,sol[i]);
    fout<<sol[m]*4;
    return 0;
}

• Subtask 1: 120 / 120