Submission #468519

#	Time	Username	Problem	Language	Result	Execution time	Memory
468519		Vladth11	Sure Bet (CEOI17_sure)	C++14	60 / 100	2077 ms	3140 KiB

sure

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#define debug(x) cerr << #x << " " << x << "\n"
#define debugs(x) cerr << #x << " " << x << " "
#pragma GCC optimize("Ofast,unroll-loops")

using namespace std;
using namespace __gnu_pbds;
typedef long long ll;
typedef pair <int, int> pii;
typedef pair <long double, pii> muchie;
typedef tree <ll, null_type, less_equal <ll>, rb_tree_tag, tree_order_statistics_node_update> OST;

const ll NMAX = 100001;
const ll INF = (1LL << 60);
const ll HALF = (1LL << 59);
const ll MOD = 30013;
const ll BLOCK = 318;
const ll base = 31;
const ll nr_of_bits = 21;

double a[NMAX];
double b[NMAX];
int n;

double place(double bets) {
    int sum = 0, i = 1, j = 1;
    double sa = 0, sb = 0, init = bets;
    while(bets--) {
        if(sa == sb) {
            ///poate mai facem ceva modificari
            if(j > n) {
                sa += a[i];
                i++;
                continue;
            }
            if(i > n) {
                sb += b[j];
                j++;
                continue;
            }
            if(a[i] < b[j]) {
                sb += b[j];
                j++;
                continue;
            }
            sa += a[i];
            i++;
        } else if(sa < sb) {
            if(i > n) {
                sb += b[j];
                j++;
                continue;
            }
            sa += a[i];
            i++;
        } else if(sa > sb) {
            if(j > n) {
                sa += a[i];
                i++;
                continue;
            }
            sb += b[j];
            j++;
        }
    }

    return min(sa - init, sb - init);
}

int main() {
    int i;
    cin >> n;
    for(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);
    double maxim = 0;
    for(i = 1; i <= 2 * n; i++){
        maxim = max(maxim, place(i));
    }
    cout << fixed << setprecision(4) << maxim;
    return 0;
}

Compilation message (stderr)

sure.cpp: In function 'double place(double)':
sure.cpp:28:9: warning: unused variable 'sum' [-Wunused-variable]
   28 |     int sum = 0, i = 1, j = 1;
      |         ^~~

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