Submission #865464

#	Time	Username	Problem	Language	Result	Execution time	Memory
865464		vjudge1	Sure Bet (CEOI17_sure)	C++17	0 / 100	1 ms	4444 KiB

sure

/*
   (( `'-""``""-'` ))
     )-__-_.._-__-(
   / --- (o _ o) --- \
   \ .-* ( .0. ) *-. /
   _'-. ,_ '=' _, .-'_
  / `;#'#'# - #'#'#;` \
 \_)) -----'#'----- ((_/
      # --------- #
      '# ------- #'
  /..-'# ------- #'-.\
  _\...-\'# -- #'/-.../_
  ((____)- '#' -(____))
    art by - Vinni01 / luchi abi
 
    cout << fixed << setprecision(6) << x;
    freopen ( "sum.in", "r", stdin )
*/
//#pragma GCC optimize("Ofast")
//#pragma GCC target("avx,avx2,fma")
//#pragma GCC optimization("unroll-loops")
#include <map>
#include <set>
#include <list>
#include <cmath>
#include <ctime>
#include <deque>
#include <queue>
#include <stack>
#include <string>
#include <bitset>
#include <cstdio>
#include <limits>
#include <vector>
#include <climits>
#include <cstring>
#include <cstdlib>
#include <fstream>
#include <numeric>
#include <sstream>
#include <cassert>
#include <iomanip>
#include <iostream>
#include <algorithm>
#include <stdio.h>
#include <fstream>
#include <unordered_map>
using namespace std ;
#define ll int
#define ld double
#define ff first
#define ss second
#define pb push_back 
#define pf push_front
#define UseOFF ios_base::sync_with_stdio(0);cin.tie(0), cout.tie(0)
#define sz size
#define ins insert
#define new jweijofdg
const ll N = 2e6 + 111 ;
const ll k = 400 ;
ld a[ N ], b[ N ] ;
ld p[ N ], s[ N ] ;
ld ans = 0.00 ;
signed main()
{
    UseOFF ;
    ll n, m ;
    cin >> n ;
    for( int i = 1 ; i <= n ; i++ )
    {
    	cin >> a[ i ] >> b[ i ] ;
    }
    sort( a + 1, a + n + 1 ) ;
    sort( b + 1, b + n + 1 ) ;
    reverse( a + 1, a + n + 1 ) ;
    reverse( b + 1, b + n + 1 ) ;
    ll l1 = 1,l2 = 1 ; 
    ld x = 0, y = 0 ;
    while( l1 <= n && l2 <= n )
    {
    	//cout << l1 << " " << l2 << " || " << x << " " << y << " " << ans << '\n' ;
    	if( l2 == n || x <= y )
    	{
    		x += a[ l1 ] ;
    		l1++ ;
    	}
    	else if( l1 == n || y < x )
    	{
    		y += b[ l2 ] ;
    		l2++ ;
    	}
    	ld d = min( x, y ) - ( l1 + l2 - 2 ) ;
    	ans = max( ans, d ) ; 
    }
    printf("%.4lf",(double)ans);
}

Compilation message (stderr)

sure.cpp: In function 'int main()':
sure.cpp:67:11: warning: unused variable 'm' [-Wunused-variable]
   67 |     ll n, m ;
      |           ^

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