oj.uz

Submission #13221

# Submission time Handle Problem Language Result Execution time Memory
13221 2015-02-04T09:03:37 Z dohyun0324 Schools (IZhO13_school) C++
100 / 100
 200 ms 14964 KB 
#include<stdio.h>
#include<queue>
#include<algorithm>
using namespace std;
typedef pair<int,int> ppair;
typedef long long ll;
int n,m,s,ch[300010];
ll sum,dap;
priority_queue<ppair>q1;
priority_queue<ppair>q3;
priority_queue<ppair,vector<ppair>,greater<ppair> >dat;
priority_queue<ppair>q2;
struct data{
    int x,y;
    bool operator<(const data&r)const{
        return x>r.x;
    }
}a[300010];
struct data2{
    int x,p;
    bool operator<(const data2&r)const{
        return x>r.x;
    }
}arr[300010];
int main()
{
    int i,pos;
    scanf("%d %d %d",&n,&m,&s);
    for(i=1;i<=n;i++) scanf("%d %d",&a[i].x,&a[i].y);
    sort(a+1,a+n+1);
    for(i=1;i<=m;i++) arr[i].x=a[i].y-a[i].x, arr[i].p=i;
    sort(arr+1,arr+m+1);
    for(i=1;i<=m;i++) sum+=a[i].x;
    for(i=m+1;i<=n;i++) q3.push(make_pair(a[i].y,i));
    for(i=m+1;i<=m+s;i++)
    {
        pos=q3.top().second;
        sum+=a[pos].y;
        q1.push(make_pair(a[pos].x-a[pos].y,pos));
        dat.push(make_pair(a[pos].y,pos));
        q3.pop();
        ch[pos]=1;
    }
    for(i=m+1;i<=n;i++)
    {
        if(ch[i]) continue;
        q2.push(make_pair(a[i].x,i));
    }
    if(dap<sum) dap=sum;
    for(i=1;i<=min(m,s);i++)
    {
        while(dat.size() && ch[dat.top().second]==0) dat.pop();
        while(q1.size() && ch[q1.top().second]==0) q1.pop();
        sum+=arr[i].x;
        if(q2.size()==0 || q1.top().first>=q2.top().first-dat.top().first)
        {
            sum+=q1.top().first;
            ch[q1.top().second]=0;
        }
        else
        {
            sum+=q2.top().first-dat.top().first;
            q2.pop(); ch[dat.top().second]=0; q2.push(make_pair(a[dat.top().second].x,dat.top().second));
        }
        if(dap<sum) dap=sum;
    }
    printf("%lld",dap);
    return 0;
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 7444 KB Output is correct
2 Correct 0 ms 7444 KB Output is correct
3 Correct 0 ms 7444 KB Output is correct
4 Correct 0 ms 7444 KB Output is correct
5 Correct 0 ms 7444 KB Output is correct
6 Correct 0 ms 7444 KB Output is correct
7 Correct 2 ms 7444 KB Output is correct
8 Correct 0 ms 7444 KB Output is correct
9 Correct 3 ms 7444 KB Output is correct
10 Correct 0 ms 7444 KB Output is correct
11 Correct 3 ms 7604 KB Output is correct
12 Correct 0 ms 7604 KB Output is correct
13 Correct 14 ms 7588 KB Output is correct
14 Correct 46 ms 10096 KB Output is correct
15 Correct 70 ms 13744 KB Output is correct
16 Correct 105 ms 14964 KB Output is correct
17 Correct 158 ms 12912 KB Output is correct
18 Correct 150 ms 13936 KB Output is correct
19 Correct 156 ms 12912 KB Output is correct
20 Correct 200 ms 13936 KB Output is correct