oj.uz

Submission #673574

# Submission time Handle Problem Language Result Execution time Memory
673574 2022-12-21T07:22:39 Z ReLice Schools (IZhO13_school) C++14
35 / 100
 201 ms 20536 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+=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 1 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 1 ms 212 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Incorrect 5 ms 596 KB Output isn't correct
8 Correct 4 ms 660 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 660 KB Output isn't correct
12 Incorrect 4 ms 660 KB Output isn't correct
13 Incorrect 28 ms 3276 KB Output isn't correct
14 Incorrect 56 ms 5680 KB Output isn't correct
15 Incorrect 98 ms 11112 KB Output isn't correct
16 Correct 143 ms 10964 KB Output is correct
17 Incorrect 141 ms 12436 KB Output isn't correct
18 Incorrect 168 ms 13572 KB Output isn't correct
19 Incorrect 174 ms 14328 KB Output isn't correct
20 Incorrect 201 ms 20536 KB Output isn't correct