oj.uz

Submission #685013

# Submission time Handle Problem Language Result Execution time Memory
685013 2023-01-23T05:27:03 Z Nuraly_Serikbay Sure Bet (CEOI17_sure) C++14
100 / 100
 83 ms 5184 KB 
/* Speech to the young */

//#include <bits/stdc++.h>
#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>

/*
#pragma GCC optimize("inline")
#pragma GCC optimize("-fgcse,-fgcse-lm")
#pragma GCC optimize("-ftree-pre,-ftree-vrp")
#pragma GCC optimize("-ffast-math")
#pragma GCC optimize("-fipa-sra")
#pragma GCC optimize("-fpeephole2")
#pragma GCC optimize("-fsched-spec")
#pragma GCC optimize("Ofast,no-stack-protector")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,avx2,tune=native")
#pragma GCC optimize("unroll-loops")
*/
 

using namespace std;

#define mp make_pair
#define pb push_back
#define all(x) x.begin(),x.end()
#define F first
#define S second
#define YOSIK() ios_base::sync_with_stdio(0),cin.tie(0)
#define int long long
#define cube (x) ((x) * (x) * (x))

int gcd (int a, int b) {if (b == 0){return a;}else {return gcd (b, a % b);}}
void pre(int a) { cout<<fixed<<setprecision(a); }
int bitcount (int x) {return __builtin_popcount	(x);}

const int N = 2e6 + 10;
const int INF = 1e18 + 1;
const int MOD = 1e9 + 7;
const int P = 31;
const double eps = 1e-19;
long double pi = 3.1415926535897323;

double a[N], b[N], res, suma[N], sumb[N];
int n;

void Solution () {
	cin >> n;
	for (int i = 1; i <= n; ++ i) cin >> a[i] >> b[i];
	sort (a + 1, a + n + 1), reverse (a + 1, a + n + 1);
	sort (b + 1, b + n + 1), reverse (b + 1, b + n + 1);
	for (int i = 1; i <= n; ++ i) {
		suma[i] = suma[i - 1] + a[i];
		sumb[i] = sumb[i - 1] + b[i];
	}
	
	
	for (int i = 1; i <= n; ++ i) {
		int l = 1, r = n, ans = -1;
		while (l <= r) {
			int mid = (l + r) >> 1;
			if (sumb[mid] >= suma[i]) {
				r = mid - 1;
				ans = mid;
			} else l = mid + 1;
		}	
		if (ans != -1) res = max (res, (double)(suma[i] - (double)(ans + i)));
	}
	for (int i = 1; i <= n; ++ i) {
		int l = 1, r = n, ans = -1;
		while (l <= r) {
			int mid = (l + r) >> 1;
			if (suma[mid] >= sumb[i]) {
				ans = mid;
				r = mid - 1;
			} else l = mid + 1;
		}
		if (ans != -1) res = max (res, (double)(sumb[i] - (double)(ans + i)));
	}
	cout << fixed << setprecision (4) << res;
	return; 
}

signed main () {
	YOSIK();
//	precalc();
	int T = 1;
//	cin >> T;
	while (T --) Solution ();
	exit (0);
}

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct

Subtask #3
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 77 ms 3464 KB Output is correct
18 Correct 78 ms 4796 KB Output is correct
19 Correct 76 ms 4752 KB Output is correct
20 Correct 74 ms 4792 KB Output is correct
21 Correct 83 ms 5092 KB Output is correct
22 Correct 77 ms 4792 KB Output is correct
23 Correct 78 ms 4728 KB Output is correct
24 Correct 76 ms 4824 KB Output is correct
25 Correct 78 ms 4828 KB Output is correct
26 Correct 83 ms 5184 KB Output is correct