oj.uz

Submission #673576

# Submission time Handle Problem Language Result Execution time Memory
673576 2022-12-21T07:33:45 Z ReLice Schools (IZhO13_school) C++14
35 / 100
 195 ms 22844 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;
    cin>>n>>m>>k;
    ll a[n+1],b[n+1];
    vector <pair<ll,ll>> vec;
    vector <ll> v,v2;
    set<ll> st,st2;
    for(i=1;i<=n;i++){
        cin>>a[i]>>b[i];
        vec.pb({a[i]-b[i],i});
    }
    sort(vec.rbegin(),vec.rend());
    v.pb(0);
    v2.pb(0);
    for(i=0;i<n;i++){
        v.pb(a[vec[i].sc]);
        v2.pb(b[vec[i].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:17:12: warning: unused variable 'x' [-Wunused-variable]
   17 |     ll n,i,x,y,mx=-1;
      |            ^
school.cpp:17:14: warning: unused variable 'y' [-Wunused-variable]
   17 |     ll n,i,x,y,mx=-1;
      |              ^
school.cpp:18:18: warning: unused variable 'c' [-Wunused-variable]
   18 |     ll m,k,sum=0,c=0,j;
      |                  ^
school.cpp:18:22: warning: unused variable 'j' [-Wunused-variable]
   18 |     ll m,k,sum=0,c=0,j;
      |                      ^
school.cpp: At global scope:
school.cpp:85:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   85 | 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 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Incorrect 4 ms 612 KB Output isn't correct
8 Correct 4 ms 740 KB Output is correct
9 Incorrect 4 ms 748 KB Output isn't correct
10 Incorrect 4 ms 724 KB Output isn't correct
11 Incorrect 4 ms 724 KB Output isn't correct
12 Incorrect 4 ms 724 KB Output isn't correct
13 Incorrect 27 ms 3360 KB Output isn't correct
14 Incorrect 54 ms 6304 KB Output isn't correct
15 Incorrect 98 ms 12332 KB Output isn't correct
16 Correct 147 ms 12336 KB Output is correct
17 Incorrect 143 ms 14176 KB Output isn't correct
18 Incorrect 156 ms 15536 KB Output isn't correct
19 Incorrect 165 ms 16304 KB Output isn't correct
20 Incorrect 195 ms 22844 KB Output isn't correct