oj.uz

Submission #201596

# Submission time Handle Problem Language Result Execution time Memory
201596 2020-02-11T10:47:41 Z Shelby Schools (IZhO13_school) C++11
20 / 100
 2000 ms 21964 KB 
#include <bits/stdc++.h>
#define MAXN 300005
using namespace std;
typedef long long ll;

int a[MAXN],b[MAXN];
bool taken[MAXN];

set<pair<int,int>,greater<pair<int,int> > > mm;
set<pair<int,int>,greater<pair<int,int> > > ss;
set<int> tt;

vector< pair<int,int> > poma;
vector< pair<int,int> > pomb;
vector<int> not_taken;

int main()
{ int m,n,s,i,cnt=0;
long long sol=0;
scanf("%d%d%d",&n,&m,&s);

for(i=0;i<n;i++)
{
    scanf("%d%d",&a[i],&b[i]);

    poma.push_back( {a[i],i} );

    pomb.push_back( {b[i],i} );
}

sort(poma.begin(),poma.end(),greater<pair<int,int> >());

sort(pomb.begin(),pomb.end(),greater<pair<int,int> >());

for(i=0;i<m;i++)
{
    int tmp=poma[i].second;

    sol+=(ll)a[tmp];

    taken[tmp]=true;

    mm.insert( { b[tmp]-a[tmp] , tmp } );
}

for(i=0;i<n;i++)
{
    int tmp=pomb[i].second;

    if(taken[tmp]==false && cnt<s)
    {
        cnt++;

        sol+=(ll)b[tmp];

        taken[tmp]=true;

        ss.insert( { a[tmp]-b[tmp] , tmp } );
    }

    if(taken[tmp]==false && cnt>=s) not_taken.push_back(a[tmp]);
}

bool ok=true;

while(ok)
{
    pair<int,int> k=*mm.begin();   pair<int,int> l=*ss.begin();

    if((k.first+l.first)>0)
    {
        mm.erase(mm.begin());   ss.erase(ss.begin());

        mm.insert( { -l.first,l.second } );

        ss.insert( { -k.first,k.second } );

        sol+=(ll)k.first+(ll)l.first;
    }
    else ok=false;
}

for(auto it=mm.begin();it!=mm.end();++it)
{
    pair<int,int> tmp=*it;

    tt.insert(a[tmp.second]);
}

sort(not_taken.begin(),not_taken.end(),greater<int>());

int p=0;

ok=true;

while(ok && p<not_taken.size() && !tt.empty())
{
    int kk=*tt.begin();

    if(kk<not_taken[p])
    {
        p++;

        tt.erase(tt.begin());

        sol+=(ll)not_taken[p]-(ll)kk;
    }
    else ok=false;
}

printf("%lld\n",sol);
    return 0;
}

Compilation message

school.cpp: In function 'int main()':
school.cpp:96:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
 while(ok && p<not_taken.size() && !tt.empty())
             ~^~~~~~~~~~~~~~~~~
school.cpp:20:6: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
 scanf("%d%d%d",&n,&m,&s);
 ~~~~~^~~~~~~~~~~~~~~~~~~
school.cpp:24:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d",&a[i],&b[i]);
     ~~~~~^~~~~~~~~~~~~~~~~~~~

Subtask #1
20.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Execution timed out 2075 ms 424 KB Time limit exceeded
3 Correct 5 ms 376 KB Output is correct
4 Incorrect 5 ms 376 KB Output isn't correct
5 Incorrect 5 ms 376 KB Output isn't correct
6 Incorrect 5 ms 364 KB Output isn't correct
7 Incorrect 7 ms 632 KB Output isn't correct
8 Correct 9 ms 888 KB Output is correct
9 Incorrect 9 ms 888 KB Output isn't correct
10 Incorrect 9 ms 888 KB Output isn't correct
11 Incorrect 8 ms 760 KB Output isn't correct
12 Incorrect 9 ms 796 KB Output isn't correct
13 Incorrect 42 ms 4072 KB Output isn't correct
14 Incorrect 65 ms 4980 KB Output isn't correct
15 Incorrect 108 ms 7896 KB Output isn't correct
16 Correct 220 ms 15860 KB Output is correct
17 Incorrect 247 ms 17368 KB Output isn't correct
18 Incorrect 256 ms 18004 KB Output isn't correct
19 Incorrect 280 ms 19544 KB Output isn't correct
20 Incorrect 318 ms 21964 KB Output isn't correct