| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 498372 |
2021-12-25T05:30:01 Z |
mansur |
Sure Bet (CEOI17_sure) |
C++17 |
|
0 ms |
204 KB |
#include<bits/stdc++.h>
/*
#pragma optimize ("g",on)
#pragma GCC optimize ("inline")
#pragma GCC optimize ("Ofast")
#pragma GCC optimize ("unroll-loops")
#pragma GCC optimize ("03")
#pragma GCC target ("sse,sse2,sse3,ssse3,sse4,popcnt,abm,avx2,mmx,fma,avx,tune=native")
#pragma comment(linker, "/stack:200000000")
*/
//01001101 01100001 01101011 01101000 01100001 01100111 01100001 01111001
using namespace std;
#define all(a) a.begin(), a.end()
#define rall(a) a.rbegin(), a.rend()
#define ll long long
#define pb push_back
#define sz(a) a.size()
#define nl '\n'
#define popb pop_back()
#define ld double
#define ull unsigned long long
#define ff first
#define ss second
#define fix fixed << setprecision
#define pii pair<int, int>
#define E exit (0)
#define int long long
const int inf = 1e15, N = 2e5 + 5, mod = 998244353;
vector<pii> dir = {{1, 0}, {0, 1}, {-1, 0}, {0, -1}};
main() {
//freopen("triangles.in", "r", stdin);
//freopen("triangles.out", "w", stdout);
ios_base::sync_with_stdio(NULL);
cin.tie(NULL);
int n;
cin >> n;
vector<double> a, b;
for (int i = 1; i <= n; i++) {
double x, y;
cin >> x >> y;
a.pb(x);
b.pb(y);
}
sort(rall(a));
sort(rall(b));
double prefa[n + 1], prefb[n + 1];
prefa[0] = prefb[0] = 0;
for (int i = 1; i <= n; i++) {
prefa[i] = prefa[i - 1] + a[i - 1];
prefb[i] = prefb[i - 1] + b[i - 1];
}
double ans = 0;
for (int t = 1; t <= n * 2; t++) {
int l = 0, r = t;
double cur = 0;
while (l <= r) {
int mid = (l + r) / 2;
if (prefa[mid] <= prefb[t - mid]) {
l = mid + 1;
cur = prefa[mid];
}else r = mid - 1;
}
ans = max(ans, cur - t * 1.0);
l = 0, r = t;
cur = 0;
while (l <= r) {
int mid = (l + r) / 2;
if (prefb[mid] <= prefa[t - mid]) {
l = mid + 1;
cur = prefb[mid];
}else r = mid - 1;
}
ans = max(ans, cur - t * 1.0);
}
cout << fix(4) << ans;
}
Compilation message
sure.cpp:35:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
35 | main() {
| ^~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
204 KB |
Output is correct |
| 2 |
Incorrect |
0 ms |
204 KB |
Output isn't correct |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
204 KB |
Output is correct |
| 2 |
Incorrect |
0 ms |
204 KB |
Output isn't correct |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
204 KB |
Output is correct |
| 2 |
Incorrect |
0 ms |
204 KB |
Output isn't correct |
| 3 |
Halted |
0 ms |
0 KB |
- |
