Submission #938427

#	Time	Username	Problem	Language	Result	Execution time	Memory
938427		vjudge1	Sure Bet (CEOI17_sure)	C++17	20 / 100	69 ms	444 KiB

sure

#include <bits/stdc++.h>

#define ff first
#define ss second
#define pb push_back
#define all(x) x.begin(),x.end()
#define rall(x) x.rbegin(),x.rend()
#define int long long 

using namespace std;

//int pow(int a,int b,int m){int ans=1;while(b){if(b&1){ans=(ans*a)%m;}b>>=1;a=(a*a)%m;}return ans;}
//int binpow(int a,int b){int ans=1;while(b){if(b&1){ans=(ans*a);}b>>=1;a=(a*a);}return ans;}
  
const int N = 2e5 + 10,  inf = 1e18;

main(){
	iostream::sync_with_stdio(false);  
    cin.tie(nullptr);
    cout.tie(nullptr);
    int32_t n;
    cin >> n;
    vector <long double> a(n), b(n);
    for(int i = 0; i < n; i++){
		cin >> a[i] >> b[i];
	}
	long double ans = -inf;
	for(int i = 0; i < (1 << n); i++){
		for(int j = 0; j < (1 << n); j++){
			long double suma = 0, sumb = 0;
			for(int l = 0; l < n; l++){
				if(i & (1 << l))
					suma += a[l];
				if(j & (1 << l))
					sumb += b[l];
			}
			ans = max(ans, min(suma, sumb) - __builtin_popcount(i) - __builtin_popcount(j));
		}
	}
	printf("%.4lf",(double)ans);
}

Compilation message (stderr)

sure.cpp:17:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   17 | main(){
      | ^~~~

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