oj.uz

Submission #673562

# Submission time Handle Problem Language Result Execution time Memory
673562 2022-12-21T05:12:31 Z ReLice Schools (IZhO13_school) C++14
30 / 100
 2000 ms 20520 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,l,r,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({y-x,{x,y}});
    }
    sort(vec.begin(),vec.end());
    v.pb(0);
    v2.pb(0);
    for(i=0;i<n;i++){
        v.pb(vec[i].sc.fr);
        v2.pb(vec[i].sc.sc);
    }
    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:17:16: warning: unused variable 'l' [-Wunused-variable]
   17 |     ll n,i,x,y,l,r,mx=-1;
      |                ^
school.cpp:17:18: warning: unused variable 'r' [-Wunused-variable]
   17 |     ll n,i,x,y,l,r,mx=-1;
      |                  ^
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:68:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   68 | main(){
      | ^~~~

Subtask #1
30.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Execution timed out 2088 ms 212 KB Time limit exceeded
3 Correct 0 ms 212 KB Output is correct
4 Incorrect 1 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 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 29 ms 3136 KB Output isn't correct
14 Incorrect 53 ms 5632 KB Output isn't correct
15 Incorrect 95 ms 11048 KB Output isn't correct
16 Correct 145 ms 10908 KB Output is correct
17 Incorrect 142 ms 12452 KB Output isn't correct
18 Incorrect 157 ms 13656 KB Output isn't correct
19 Incorrect 183 ms 14328 KB Output isn't correct
20 Incorrect 197 ms 20520 KB Output isn't correct