Submission #338012

#	Time	Username	Problem	Language	Result	Execution time	Memory
338012		rrrr10000	Sure Bet (CEOI17_sure)	C++14	0 / 100	1 ms	364 KiB

sure

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<ll,ll> P;
typedef tuple<ll,ll,ll> PP;
typedef vector<ll> vi;
typedef vector<bool> vb;
typedef vector<vb> vvb;
typedef vector<vi> vvi;
typedef vector<vvi> vvvi;
typedef vector<P> vp;
typedef vector<vp> vvp;
typedef vector<PP> vpp;
#define rep(i,n) for(ll i=0;i<(ll)(n);i++)
#define REP(i,k,n) for(ll i=(ll)(k);i<(ll)(n);i++)
#define all(v) v.begin(),v.end()
#define dupli(v) {sort(all(v));v.erase(unique(all(v)),v.end());}
#define rsort(a) {sort(all(a));reverse(all(a));}
#define pb emplace_back
#define fi first
#define se second
#define lb(v,k) (lower_bound(all(v),k)-v.begin())
template<class T>bool chmin(T&a,T b){if(a>b){a=b;return true;}return false;}
template<class T>bool chmax(T&a,T b){if(a<b){a=b;return true;}return false;}
template<class T>void out(T a){cout<<a<<endl;}
template<class T>void outp(T a){cout<<'('<<a.fi<<','<<a.se<<')'<<endl;}
template<class T>void outv(T v){rep(i,v.size()){if(i)cout<<' ';cout<<v[i];}cout<<endl;}
template<class T>void outvp(T v){for(auto a:v)cout<<'('<<a.fi<<','<<a.se<<')';cout<<endl;}
template<class T>void outvv(T v){for(auto x:v)outv(x);}
template<class T>void outvvp(T v){for(auto x:v)outvp(x);}
const ll inf=1001001001001001001;

int main(){
    ll n;cin>>n;
    vector<double> a(n),b(n);
    rep(i,n)cin>>a[i]>>b[i];
    rsort(a);rsort(b);
    int r=0;
    double ans=0,suml=0,sumr=0;
    /*rep(l,n){
        suml+=a[l];
        while(r<n&&sumr+b[r]<suml)sumr+=b[r++];
        chmax(ans,min(suml,sumr)-l-r-1);
        if(r<n)chmax(ans,min(suml,sumr+b[r])-l-r-2);
    }*/
    rep(l,n){
        suml+=a[l];
        sumr=0;
        rep(r,n){
            sumr+=b[r];
            chmax(ans,min(suml,sumr)-l-r-2);
        }
    }
    printf("%4lf",ans);cout<<endl;
}

Compilation message (stderr)

sure.cpp: In function 'int main()':
sure.cpp:38:9: warning: unused variable 'r' [-Wunused-variable]
   38 |     int r=0;
      |         ^

• Subtask 1: 0 / 20
• Subtask 2: 0 / 40
• Subtask 3: 0 / 40