Submission #243484

#	Time	Username	Problem	Language	Result	Execution time	Memory
243484		VEGAnn	Kvalitetni (COCI16_kvalitetni)	C++14	120 / 120	12 ms	1292 KiB

kvalitetni

#include <bits/stdc++.h>
//#pragma GCC optimize("unroll-loops")
//#pragma GCC optimize("-O3")
//#pragma GCC optimize("Ofast")
//#pragma GCC optimize("fast-math")
//#pragma GCC optimize("no-stack-protector")
#define ft first
#define sd second
#define all(x) x.begin(),x.end()
#define sz(x) ((int)x.size())
#define i2 array<int,2>
#define PB push_back
#define pdi pair<ld,int>
using namespace std;
typedef long double ld;
const int N = 110;
const int oo = 2e9;
const int md = int(1e9) + 7;
const ld E = 1e-9; // 1e-12
string s;
int n, z[N];

pdi rec(int lf){
    vector<ld> vc;

    vc.clear();

    char tp = '_';

    int ps = lf + 1;

    if (s[ps] == '?')
        return {ld(z[1]), ps + 1};

    while (1){
        if (s[ps] == ')') break;

        if (s[ps] == '('){
            pdi get = rec(ps);

            vc.PB(get.ft);

            ps = get.sd + 1;
        } else tp = s[ps++];
    }

    assert(sz(vc) > 1);

    if (tp == '+'){
        ld sum = 0;

        for (ld cr : vc){
            sum += cr;
            sum = min(sum, ld(z[sz(vc)]));
        }

        return {sum, ps};
    } else {
        sort(all(vc));

        int cnt = 0;

        while (1){
            ld med = z[sz(vc)];

            for (int i = 0; i < cnt; i++)
                med -= vc[i];

            med /= (ld(sz(vc)) - ld(cnt));

            int nw = cnt;

            for (int i = cnt; i < sz(vc); i++)
                if (vc[i] + E < med)
                    nw++;
                else break;

            if (nw == cnt) break;

            cnt = nw;
        }

        ld med = z[sz(vc)];

        for (int i = 0; i < cnt; i++)
            med -= vc[i];

        med /= (ld(sz(vc)) - ld(cnt));

        ld res = 1.0;

        for (int i = 0; i < sz(vc); i++)
            res *= min(vc[i], med);

        return {res, ps};
    }

    // return {res, ps};
}

int main(){
    ios_base::sync_with_stdio(0); cin.tie(0);

#ifdef _LOCAL
    freopen("in.txt","r",stdin);
#endif // _LOCAL

    cin >> n;

    for (int i = 1; i <= n; i++)
        cin >> z[i];

    cin >> s;

    cout << fixed << setprecision(10) << rec(0).ft << '\n';

    return 0;
}

• Subtask 1: 12 / 12
• Subtask 2: 12 / 12
• Subtask 3: 12 / 12
• Subtask 4: 12 / 12
• Subtask 5: 12 / 12
• Subtask 6: 12 / 12
• Subtask 7: 12 / 12
• Subtask 8: 12 / 12
• Subtask 9: 12 / 12
• Subtask 10: 12 / 12