oj.uz

Submission #673575

# Submission time Handle Problem Language Result Execution time Memory
673575 2022-12-21T07:24:24 Z ReLice Schools (IZhO13_school) C++14
35 / 100
 195 ms 20476 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<k;i++) sum+=v2[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 0 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 0 ms 340 KB Output is correct
7 Incorrect 3 ms 596 KB Output isn't correct
8 Correct 4 ms 728 KB Output is correct
9 Incorrect 4 ms 660 KB Output isn't correct
10 Incorrect 4 ms 660 KB Output isn't correct
11 Incorrect 4 ms 676 KB Output isn't correct
12 Incorrect 6 ms 660 KB Output isn't correct
13 Incorrect 29 ms 3164 KB Output isn't correct
14 Incorrect 53 ms 5708 KB Output isn't correct
15 Incorrect 98 ms 11028 KB Output isn't correct
16 Correct 129 ms 10884 KB Output is correct
17 Incorrect 144 ms 12376 KB Output isn't correct
18 Incorrect 156 ms 13640 KB Output isn't correct
19 Incorrect 166 ms 14388 KB Output isn't correct
20 Incorrect 195 ms 20476 KB Output isn't correct