Submission #991761

#	Time	Username	Problem	Language	Result	Execution time	Memory
991761		Otalp	Let's Win the Election (JOI22_ho_t3)	C++14	0 / 100	210 ms	2484 KiB

Main

#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

pair<ld, ld> a[300100];
ll b[300100];
ll us[300100];
ll n, m;


bool cmp(int x, int y){
    return a[x].ss < a[y].ss;
}

void solve(){
    cin>>n>>m;
    int cnt = 0;
    vector<int> q;
    for(int i=1; i<=n; i++){
        cin>>a[i].ff>>a[i].ss;
        if(a[i].ss == -1) a[i].ss = 1e9;
        else cnt ++; 
    }
    sort(a + 1, a + 1 + n);
    for(int i=1; i<=n; i++){
        if(a[i].ss != -1) q.pb(i);
    }
    //for(int i=1; i<=n; i++){
        //cout<<a[i].ff<<' '<<a[i].ss<<'\n';
    //}
    sort(q.begin(), q.end(), cmp);
    ld ans = 1e18;
    for(int k=0; k<=n; k++){
        q.clear();
        for(int i=k + 1; i<=n; i++){
            if(a[i].ss != 1e9) q.pb(i);
        }
        sort(q.begin(), q.end(), cmp);
        for(int d=0; d<q.size(); d++){
            ld res = 0;
            for(int i=1; i<=n; i++) us[i] = 0;
            for(int i=0; i<d; i++){
                us[q[i]] = 1;
                res += a[q[i]].ss / (i + 1);
            }
            ll g = d;
            for(int i=1; g < m; i++){
                if(!us[i]) res += a[i].ff / (d + 1), us[i] = 1, g ++;
            }
            //cout<<"##############\n";
            //cout<<d<<' '<<res<<'\n';
            //for(int i=0; i<d; i++){
                ////cout<<q[i]<<'\n';
                //cout<<a[q[i]].ff<<' '<<a[q[i]].ss<<'\n';
            //}
            ans = min(ans, res);
        }
    }
    cout<<fixed<<setprecision(9)<<ans<<'\n';
}


signed main(){
    solve();
}

Compilation message (stderr)

Main.cpp: In function 'void solve()':
Main.cpp:45:23: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   45 |         for(int d=0; d<q.size(); d++){
      |                      ~^~~~~~~~~

• Subtask 1: 0 / 5
• Subtask 2: 0 / 5
• Subtask 3: 0 / 11
• Subtask 4: 0 / 12
• Subtask 5: 0 / 33
• Subtask 6: 0 / 11
• Subtask 7: 0 / 23