oj.uz

Submission #938281

# Submission time Handle Problem Language Result Execution time Memory
938281 2024-03-05T04:04:46 Z vjudge1 Sure Bet (CEOI17_sure) C++17
100 / 100
 118 ms 6740 KB 
#include <bits/stdc++.h>
#define ll long long
#define str string
#define ins insert
#define ld long double
#define pb push_back
#define pf push_front
#define pof pop_front()
#define pob pop_back()
#define lb lower_bound
#define ub upper_bound
#define endl "\n"
#define fr first
#define sc second
#define all(x) x.begin(),x.end()
#define rall(x) x.rbegin(),x.rend()
#define sz size()
#define vll vector<ll>
#define bc back()
#define arr array
#define pll vector<pair<ll,ll>>
using namespace std;/*
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
#define ordered_set tree<ll, null_type,less_equal<ll>, rb_tree_tag,tree_order_statistics_node_update>*/
template<class S,class T>
bool chmin(S &a,const T &b) {
	return a>b?(a=b)==b:false;
}
template<class S,class T>
bool chmax(S &a,const T &b) {
	return a<b?(a=b)==b:false;
}
//void fre(string s){freopen((s+".in").c_str(),"r",stdin);freopen((s+".out").c_str(),"w",stdout);}
void start(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
}
const ll inf=1e18;
const ld mod=1e10;
const ll N=1e5+5;
const ld eps=1e-6;
ld pr1[N],pr2[N];
void solve(){
    ll i,j;
    ll n;
    cin>>n;
    vector<ld> a(n),b(n);
    for(i=0;i<n;i++) cin>>a[i]>>b[i];
    sort(rall(a));
    sort(rall(b));
    while(a.sz && a.bc<=1)a.pob;
    while(b.sz && b.bc<=1)b.pob;
    pr1[0]=pr2[0]=0;
    for(i=1;i<=a.sz;i++) pr1[i]=pr1[i-1]+a[i-1];
    for(i=1;i<=b.sz;i++) pr2[i]=pr2[i-1]+b[i-1];
    ld l=0,r=mod;
    while(l+eps<r){
        ld mid=(l+r)/2;
        i=0,j=0;
        while(i<=a.sz && j<=b.sz){
            if(pr1[i]-i-j>=mid && pr2[j]-i-j>=mid)break;
            if(pr1[i]<pr2[j])i++;
            else j++;
        }
        if(i>a.sz || j>b.sz)r=mid;
        else l=mid;
    }
    cout<<fixed<<setprecision(4)<<l<<endl;
}

signed main(){
	start();
    ll t=1;
    //cin>>t;
    while(t--) solve();
    return 0;
}
/*





*/

Compilation message

sure.cpp: In function 'void solve()':
sure.cpp:57:14: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long double>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   57 |     for(i=1;i<=a.sz;i++) pr1[i]=pr1[i-1]+a[i-1];
      |              ^
sure.cpp:58:14: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long double>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   58 |     for(i=1;i<=b.sz;i++) pr2[i]=pr2[i-1]+b[i-1];
      |              ^
sure.cpp:63:16: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long double>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   63 |         while(i<=a.sz && j<=b.sz){
      |                ^
sure.cpp:63:27: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long double>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   63 |         while(i<=a.sz && j<=b.sz){
      |                           ^
sure.cpp:68:13: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long double>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   68 |         if(i>a.sz || j>b.sz)r=mid;
      |             ^
sure.cpp:68:23: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long double>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   68 |         if(i>a.sz || j>b.sz)r=mid;
      |                       ^

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 2 ms 2396 KB Output is correct
6 Correct 0 ms 2396 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 2 ms 2396 KB Output is correct
6 Correct 0 ms 2396 KB Output is correct
7 Correct 1 ms 2392 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 2 ms 2396 KB Output is correct
13 Correct 2 ms 2548 KB Output is correct
14 Correct 2 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 2 ms 2396 KB Output is correct

Subtask #3
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 2 ms 2396 KB Output is correct
6 Correct 0 ms 2396 KB Output is correct
7 Correct 1 ms 2392 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 2 ms 2396 KB Output is correct
13 Correct 2 ms 2548 KB Output is correct
14 Correct 2 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 2 ms 2396 KB Output is correct
17 Correct 106 ms 6736 KB Output is correct
18 Correct 99 ms 6488 KB Output is correct
19 Correct 104 ms 6480 KB Output is correct
20 Correct 97 ms 6716 KB Output is correct
21 Correct 111 ms 6484 KB Output is correct
22 Correct 98 ms 6484 KB Output is correct
23 Correct 99 ms 6480 KB Output is correct
24 Correct 108 ms 6680 KB Output is correct
25 Correct 97 ms 6720 KB Output is correct
26 Correct 118 ms 6740 KB Output is correct