제출 #90776

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
90776		Aydarov03	학교 설립 (IZhO13_school)	C++14	30 / 100	454 ms	51084 KiB

school

#include <bits/stdc++.h>
#define ll long long
#define pii pair<ll,ll>
#define fr first
#define sc second
using namespace std;

vector < pii > v;

main()
{
    set < ll > rz;
    set < pii> v1 , v2;

    int x , y;
    ll n , m , s , ans = 0;
    cin >> n >> m >> s;



    for(int i = 1; i <= n; i++)
    {
        scanf("%d%d" , &x , &y);
        v.push_back( {x , y} );
    }

    sort( v.rbegin() , v.rend() );
    for(int i = 0; i < m; i++)
    {
        ans += v[i].fr;
        rz.insert( (v[i].fr - v[i].sc) );
    }

    for(int i = m; i < n; i++)
    {
        v1.insert( v[i] );
        v2.insert( {v[i].sc , v[i].fr} );
    }



    for(int i = s; i >= 1; i--)
    {
        pii x = *v1.rbegin();
        pii y = *v2.rbegin();
        int raz = -*rz.begin();

        if( x.fr + raz > y.fr )
        {
            ans += (x.fr + raz);
            rz.erase( rz.begin() );
            rz.insert(  x.fr - x.sc );
            v1.erase( v1.find( {x.fr , x.sc}) );
            v2.erase( v2.find( {x.sc , x.fr} ) );
        }
        else
        {
            ans += y.fr;
            v2.erase( v2.find( {y.fr , y.sc } ) );
            v1.erase( v1.find( { y.sc , y.fr } ) );
        }
    }

    cout << ans;
}

컴파일 시 표준 에러 (stderr) 메시지

school.cpp:10:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main()
      ^
school.cpp: In function 'int main()':
school.cpp:23:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d%d" , &x , &y);
         ~~~~~^~~~~~~~~~~~~~~~~~

• Subtask 1: 30 / 100