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Submission #553255

# Submission time Handle Problem Language Result Execution time Memory
553255 2022-04-25T08:49:15 Z farhan132 Sure Bet (CEOI17_sure) C++17
100 / 100
 914 ms 3660 KB 
/***Farhan132***/
//#pragma GCC optimize("Ofast")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,avx2,fma")
//#pragma GCC optimization ("unroll-loops")
//#pragma GCC optimize("Ofast,fast-math")
 
#include <bits/stdc++.h>
 
 
 
using namespace std;
 
typedef long long ll;
typedef unsigned long long ull;
typedef double dd;
typedef vector<ll> vll;
typedef pair<ll , ll> ii;
typedef vector< ii > vii;
typedef pair < pair < ll , ll > , pair < ll , ll > > cm; 
typedef tuple < ll,  ll, ll > tp;
 
#define ff first
#define ss second
#define pb push_back
#define in insert
#define f0(b) for(int i=0;i<(b);i++)
#define f00(b) for(int j=0;j<(b);j++)
#define f1(b) for(int i=1;i<=(b);i++)
#define f11(b) for(int j=1;j<=(b);j++)
#define f2(a,b) for(int i=(a);i<=(b);i++)
#define f22(a,b) for(int j=(a);j<=(b);j++)
#define sf(a) scanf("%lld",&a)
#define sff(a,b) scanf("%lld %lld", &a , &b)
#define pf(a) printf("%lld\n",a)
#define pff(a,b) printf("%lld %lld\n", a , b)
#define bug printf("**!\n")
#define mem(a , b) memset(a, b ,sizeof(a))
#define front_zero(n) __builtin_clzll(n)
#define back_zero(n) __builtin_ctzll(n)
#define total_one(n) __builtin_popcount(n)
#define clean fflush(stdout)
 
//const ll mod =  (ll) 998244353;
const ll mod =  (ll) 1e9 + 7;
const ll maxn = (ll)1e8 + 5;
const int nnn = 1048590;
const int inf = numeric_limits<int>::max()-1;
//const ll INF = numeric_limits<ll>::max()-1;
const ll INF = (ll)1e18;
 
ll dx[]={0,1,0,-1};
ll dy[]={1,0,-1,0};
ll dxx[]={0,1,0,-1,1,1,-1,-1};
ll dyy[]={1,0,-1,0,1,-1,1,-1};
 
bool USACO = 0;
 
mt19937 rng(chrono::system_clock::now().time_since_epoch().count());
 
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
 
template <typename T> using ordered_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;

const ll N = 2e5 + 5;

ll a[N] , b[N];
ll n;

void solve(){

   cin >> n;

  for(ll i = 1; i <= n; i++){
    dd x , y; cin >> x >> y;
    a[i] = 1.0 * x * 1e10;
    b[i] = 1.0 * y * 1e10;
  }
  sort(a + 1, a + n + 1, greater < ll >() );
  sort(b + 1, b + n + 1, greater < ll >() );
  a[0] = b[0] = 0;
  for(ll i = 1; i <= n; i++){
    a[i] += a[i-1];
    b[i] += b[i-1];
  }
  ll ans = 0;
  for(ll take = 2; take <= 2*n; take++){
    ll lo = 0, hg = a[n] + b[n], res = 0;
    while(lo <= hg){
        ll mid = (lo + hg)/2;
        ll t = mid + (1e10 * take);
        ll idx1 = lower_bound(a, a + n + 1, t) - a;
        ll idx2 = lower_bound(b, b + n + 1, t) - b;
        if(max(idx1, idx2) == n + 1){
            hg = mid -1;
            continue;
        }
        if(idx1 + idx2 <= take){
            lo = mid + 1;
            res = mid;
        }else{
            hg = mid - 1;
        }
    } 
    ans = max(res, ans);
  }
  dd f = ans; f /= 1e10;
  printf("%.4lf",(double)f);
  
  return;
}
 
int main() {
    
    
    #ifdef LOCAL
        freopen("in", "r", stdin);
        freopen("out", "w", stdout);
        auto start_time = clock();
    #else 
       ios_base::sync_with_stdio(0); cin.tie(NULL); cout.tie(NULL);
    #endif
 
    //pre(N);
 
    ll T = 1, CT = 0;  //cin >> T; 
 
    while(T--){

        solve();
    }
    #ifdef LOCAL
        auto end_time = clock();
        cerr<< "Execution time: "<<(end_time - start_time)*(int)1e3/CLOCKS_PER_SEC<<" ms\n";
    #endif
 
    return 0;
}

Compilation message

sure.cpp: In function 'int main()':
sure.cpp:127:15: warning: unused variable 'CT' [-Wunused-variable]
  127 |     ll T = 1, CT = 0;  //cin >> T;
      |               ^~

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 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 1 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 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 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 6 ms 356 KB Output is correct
13 Correct 6 ms 340 KB Output is correct
14 Correct 7 ms 340 KB Output is correct
15 Correct 6 ms 340 KB Output is correct
16 Correct 6 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 1 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 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 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 6 ms 356 KB Output is correct
13 Correct 6 ms 340 KB Output is correct
14 Correct 7 ms 340 KB Output is correct
15 Correct 6 ms 340 KB Output is correct
16 Correct 6 ms 340 KB Output is correct
17 Correct 821 ms 1884 KB Output is correct
18 Correct 914 ms 3312 KB Output is correct
19 Correct 877 ms 3252 KB Output is correct
20 Correct 895 ms 3248 KB Output is correct
21 Correct 811 ms 3656 KB Output is correct
22 Correct 798 ms 3284 KB Output is correct
23 Correct 887 ms 3256 KB Output is correct
24 Correct 914 ms 3276 KB Output is correct
25 Correct 897 ms 3332 KB Output is correct
26 Correct 874 ms 3660 KB Output is correct