oj.uz

Submission #673569

# Submission time Handle Problem Language Result Execution time Memory
673569 2022-12-21T07:04:14 Z ReLice Schools (IZhO13_school) C++14
35 / 100
 199 ms 20432 KB 
#include<bits/stdc++.h>
using namespace std;
#define endl "\n"
#define ll long long
#define pb push_back
#define fr first
#define sc second
void start(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
}
const ll N = 4e5 + 10 ;
const ll mod=1e9+7;
ll pr[N],suf[N];
void solve(){
    ll n,i,x,y,mx=-1;
    ll m,k,sum=0,c=0,j,b;
    cin>>n>>m>>k;
    vector <pair<ll,pair<ll,ll>>> vec;
    vector <ll> v,v2;
    set<ll> st,st2;
    for(i=0;i<n;i++){
        cin>>x>>y;
        vec.pb({x-y,{x,y}});
    }
    sort(vec.rbegin(),vec.rend());
    v.pb(0);
    v2.pb(0);
    for(i=0;i<n;i++){
        v.pb(vec[i].sc.fr);
        v2.pb(vec[i].sc.sc);
    }
    if(!m && !k){
        cout<<0<<endl;
        return;
    }
    if(!k){
        sort(v.rbegin(),v.rend());
        for(i=0;i<m;i++) sum+=v[i];
        cout<<sum<<endl;
        return;
    }
    if(!m){
        sort(v2.rbegin(),v2.rend());
        for(i=0;i<m;i++) sum+=v[i];
        cout<<sum<<endl;
        return;
    }
    for(i=1;i<=m;i++){
        st.insert(v[i]);
        sum+=v[i];
    }
    pr[m]=sum;
    for(i=m+1;i<=n;i++){
        if(v[i]>*st.begin()){
            sum-=*st.begin();
            st.erase(st.begin());
            sum+=v[i];
            st.insert(v[i]);
        }
        pr[i]=sum;
    }
    sum=0;
    for(i=n;i>n-k;i--){
        st2.insert(v2[i]);
        sum+=v2[i];
    }
    suf[n-k+1]=sum;
    for(i=n-k;i>0;i--){
        if(v2[i]>*st2.begin()){
            sum-=*st2.begin();
            st2.erase(st2.begin());
            sum+=v2[i];
            st2.insert(v2[i]);
        }
        suf[i]=sum;
    }
    for(i=m;i<=n-k;i++){
        mx=max(mx,pr[i]+suf[i+1]);
    }
    cout<<mx<<endl;
}
main(){
    //fre("");
    //start();
    ll t=1;
    //cin>>t;
    while(t--)solve();

}

Compilation message

school.cpp: In function 'void solve()':
school.cpp:18:18: warning: unused variable 'c' [-Wunused-variable]
   18 |     ll m,k,sum=0,c=0,j,b;
      |                  ^
school.cpp:18:22: warning: unused variable 'j' [-Wunused-variable]
   18 |     ll m,k,sum=0,c=0,j,b;
      |                      ^
school.cpp:18:24: warning: unused variable 'b' [-Wunused-variable]
   18 |     ll m,k,sum=0,c=0,j,b;
      |                        ^
school.cpp: At global scope:
school.cpp:84:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   84 | main(){
      | ^~~~

Subtask #1
35.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Incorrect 0 ms 212 KB Output isn't correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Incorrect 3 ms 596 KB Output isn't correct
8 Correct 3 ms 660 KB Output is correct
9 Incorrect 4 ms 660 KB Output isn't correct
10 Incorrect 3 ms 660 KB Output isn't correct
11 Incorrect 5 ms 692 KB Output isn't correct
12 Incorrect 4 ms 660 KB Output isn't correct
13 Incorrect 28 ms 3144 KB Output isn't correct
14 Incorrect 52 ms 5612 KB Output isn't correct
15 Incorrect 97 ms 11076 KB Output isn't correct
16 Correct 129 ms 10860 KB Output is correct
17 Incorrect 140 ms 12460 KB Output isn't correct
18 Incorrect 160 ms 13612 KB Output isn't correct
19 Incorrect 168 ms 14356 KB Output isn't correct
20 Incorrect 199 ms 20432 KB Output isn't correct