oj.uz

Submission #1030684

# Submission time Handle Problem Language Result Execution time Memory
1030684 2024-07-22T08:32:16 Z Otalp Let's Win the Election (JOI22_ho_t3) C++14
21 / 100
 230 ms 596 KB 
#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define int ll
#define pii pair<int, int>
#define ff first
#define ss second
#define ld long double
#define pb push_back


pii a[200100];

bool cmp(pii a, pii b){
    return a.ss < b.ss;
}

 

void solve(){
    int n, k;
    cin>>n>>k;
    int dmx = 0;
    for(int i=1; i<=n; i++){
        cin>>a[i].ff>>a[i].ss;
        if(a[i].ss == -1){
            a[i].ss = 1e9;
        }
    }
    sort(a + 1, a + 1 + n, cmp);
    //for(int i=1; i<=n; i++) cout<<a[i].ff<<' '<<a[i].ss<<'\n';
    ld ans = 1e18;
    for(ld D=1; D<=k; D++){
        vector<int> d;
        ld res = 0;
        int m = k - D+1;
        int ok = 1;
        for(int i=1; i<=D-1; i++){
            d.pb(i);
            res += 1.0 * a[i].ss / i;
        }
        multiset<pii> dd;
        for(int i=D; i<=n; i++){
            dd.insert({a[i].ff, i});
            if(dd.size() > m){
                dd.erase(--(dd.end()));
            }
        }
        for(pii x: dd){
            res += x.ff / D;
        }
        //cout<<"________________\n";
        //cout<<D<<'\n';
            //cout<<res<<'\n';
            //for(auto x: dd) cout<<x.ff<<' '<<x.ss<<'\n';
            //for(int x: d) cout<<x<<' ';
            //cout<<'\n';
        ans = min(ans, res);
        for(int i=D; i<=n; i++){
            //cout<<i<<'\n';
            pair<ld, int> mn = {1e18, -1};
            res += a[i].ss * 1.0 / (D);
            int mx = (dd.size() ?(*dd.begin()).ss :0);
            if(dd.find({a[i].ff, i}) != dd.end()){
                mx = 0;
                dd.erase({a[i].ff, i});
                res -= a[i].ff / D;
            }

            
            ld g = 0;
            d.pb(i);
            for(int i=d.size() - 1; i>=0; i--){
                int j = d[i];
                mn = min(mn, {-a[j].ss * 1.0 / (i + 1) + g - a[mx].ff/D + a[j].ff/D, j});
                if(i > 0)g += -a[j].ss * 1.0 / (i + 1) + a[j].ss * 1.0 / i;
            }
            res += mn.ff;
            dd.insert({a[mn.ss].ff, mn.ss});
            if(dd.size() > m) dd.erase(--(dd.end()));
            vector<int> dg;
            for(int x: d){
                if(x != mn.ss) dg.pb(x);
            }
            d = dg;
            ans = min(ans, res);
        }
    }
    cout<<fixed<<setprecision(6)<<ans;
}
 
 
signed main(){
    solve();
}

Compilation message

Main.cpp: In function 'void solve()':
Main.cpp:45:26: warning: comparison of integer expressions of different signedness: 'std::multiset<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
   45 |             if(dd.size() > m){
      |                ~~~~~~~~~~^~~
Main.cpp:80:26: warning: comparison of integer expressions of different signedness: 'std::multiset<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
   80 |             if(dd.size() > m) dd.erase(--(dd.end()));
      |                ~~~~~~~~~~^~~
Main.cpp:37:13: warning: unused variable 'ok' [-Wunused-variable]
   37 |         int ok = 1;
      |             ^~
Main.cpp:23:9: warning: unused variable 'dmx' [-Wunused-variable]
   23 |     int dmx = 0;
      |         ^~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 13 ms 452 KB Output is correct
6 Correct 38 ms 344 KB Output is correct
7 Correct 107 ms 468 KB Output is correct
8 Correct 176 ms 452 KB Output is correct
9 Correct 230 ms 348 KB Output is correct
10 Correct 143 ms 348 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 13 ms 452 KB Output is correct
6 Correct 38 ms 344 KB Output is correct
7 Correct 107 ms 468 KB Output is correct
8 Correct 176 ms 452 KB Output is correct
9 Correct 230 ms 348 KB Output is correct
10 Correct 143 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 47 ms 348 KB Output is correct
13 Correct 47 ms 440 KB Output is correct
14 Correct 47 ms 344 KB Output is correct
15 Correct 149 ms 348 KB Output is correct
16 Correct 158 ms 596 KB Output is correct
17 Correct 150 ms 348 KB Output is correct
18 Correct 185 ms 348 KB Output is correct
19 Correct 206 ms 348 KB Output is correct
20 Correct 200 ms 348 KB Output is correct

Subtask #3
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 444 KB Output is correct
9 Incorrect 0 ms 440 KB Output isn't correct
10 Halted 0 ms 0 KB -

Subtask #4
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 444 KB Output is correct
9 Incorrect 0 ms 440 KB Output isn't correct
10 Halted 0 ms 0 KB -

Subtask #5
0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 444 KB Output is correct
9 Incorrect 0 ms 440 KB Output isn't correct
10 Halted 0 ms 0 KB -

Subtask #6
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 220 ms 348 KB Output is correct
2 Correct 225 ms 348 KB Output is correct
3 Correct 220 ms 348 KB Output is correct
4 Correct 206 ms 348 KB Output is correct
5 Correct 202 ms 348 KB Output is correct
6 Correct 203 ms 348 KB Output is correct
7 Correct 207 ms 348 KB Output is correct

Subtask #7
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 13 ms 452 KB Output is correct
6 Correct 38 ms 344 KB Output is correct
7 Correct 107 ms 468 KB Output is correct
8 Correct 176 ms 452 KB Output is correct
9 Correct 230 ms 348 KB Output is correct
10 Correct 143 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 47 ms 348 KB Output is correct
13 Correct 47 ms 440 KB Output is correct
14 Correct 47 ms 344 KB Output is correct
15 Correct 149 ms 348 KB Output is correct
16 Correct 158 ms 596 KB Output is correct
17 Correct 150 ms 348 KB Output is correct
18 Correct 185 ms 348 KB Output is correct
19 Correct 206 ms 348 KB Output is correct
20 Correct 200 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Correct 0 ms 444 KB Output is correct
29 Incorrect 0 ms 440 KB Output isn't correct
30 Halted 0 ms 0 KB -