oj.uz

Submission #173431

# Submission time Handle Problem Language Result Execution time Memory
173431 2020-01-04T05:43:04 Z juggernaut Schools (IZhO13_school) C++14
100 / 100
 277 ms 17580 KB 
//Just try and the idea will come!
#include<bits/stdc++.h>
#define int long long int
using namespace std;
int n,i,a,b,pr[300001],sf[300001],sum;
pair<int,int>p[300001];
multiset<int>st;
bool cmp(pair<int,int>l,pair<int,int>r){
    return l.first-l.second>r.first-r.second;
}
main(){
    scanf("%lld%lld%lld",&n,&a,&b);
    for(i=1;i<=n;i++)scanf("%lld%lld",&p[i].first,&p[i].second);
    sort(p+1,p+1+n,cmp);
    for(i=1;i<=n;i++){
        sum+=p[i].first;
        st.insert(p[i].first);
        if(i>a){
            sum-=*st.begin();
            st.erase(st.begin());
        }
        pr[i]=sum;
    }
    st.clear();
    sum=0;
    for(i=n;i>0;i--){
        sum+=p[i].second;
        st.insert(p[i].second);
        if(n+1>b+i){
            sum-=*st.begin();
            st.erase(st.begin());
        }
        sf[i]=sum;
    }
    sum=0;
    for(i=a;i<=n-b;i++)sum=max(sum,pr[i]+sf[i+1]);
    printf("%lld",sum);
}

Compilation message

school.cpp:11:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main(){
      ^
school.cpp: In function 'int main()':
school.cpp:12:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%lld%lld%lld",&n,&a,&b);
     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
school.cpp:13:27: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     for(i=1;i<=n;i++)scanf("%lld%lld",&p[i].first,&p[i].second);
                      ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 380 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 1 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 4 ms 632 KB Output is correct
8 Correct 5 ms 760 KB Output is correct
9 Correct 5 ms 760 KB Output is correct
10 Correct 5 ms 760 KB Output is correct
11 Correct 5 ms 636 KB Output is correct
12 Correct 5 ms 760 KB Output is correct
13 Correct 31 ms 3320 KB Output is correct
14 Correct 54 ms 4628 KB Output is correct
15 Correct 83 ms 7544 KB Output is correct
16 Correct 178 ms 15476 KB Output is correct
17 Correct 220 ms 14668 KB Output is correct
18 Correct 229 ms 14900 KB Output is correct
19 Correct 241 ms 15832 KB Output is correct
20 Correct 277 ms 17580 KB Output is correct