oj.uz

Submission #45383

# Submission time Handle Problem Language Result Execution time Memory
45383 2018-04-13T07:13:28 Z grumpy_gordon Bosses (BOI16_bosses) C++17
100 / 100
 555 ms 3760 KB 
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#include <bits/stdc++.h>

//#pragma GCC optimize("O3")
//#pragma GCC optimize("Ofast,no-stack-protector")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx")
//#pragma GCC target("avx,tune=native")
//float __attribute__((aligned(32)))

using namespace std;

typedef long long ll;

typedef unsigned long long ull;

typedef long double ld;

typedef unsigned int uint;

ll sqr(ll x){
    return x * x;
}

int mysqrt(ll x){
    int l = 0, r = 1e9 + 1;
    while (r - l > 1){
        int m = (l + r) / 2;
        if (m * (ll)m <= x)
            l = m;
        else
            r = m;
    }
    return l;
}

mt19937 rnd(1227);

mt19937_64 rndll(12365);

ll AR = 19, BR = 13, CR = 23, XR = 228, YR = 322, MODR = 1e9 + 993;

ll myrand(){
    ll ZR = (XR * AR + YR * BR + CR) % MODR;
    XR = YR;
    YR = ZR;
    return ZR;
}

const int Mod = 1e9 + 7;

int bpow(int x, int y){
    if (y == 0)
        return 1;
    if (y == 1)
        return x;
    int ret = bpow(x, y >> 1);
    ret = (ret * (ll)ret) % Mod;
    if (y & 1)
        ret = (ret * (ll)x) % Mod;
    return ret;
}

int bdiv(int x, int y){
    return (x * (ll)bpow(y, Mod - 2)) % Mod;
}

void setmin(int &x, int y){
    x = min(x, y);
}

void setmax(int &x, int y){
    x = max(x, y);
}

void setmin(ll &x, ll y){
    x = min(x, y);
}

void setmax(ll &x, ll y){
    x = max(x, y);
}

int gcd(int a, int b){
    return a ? gcd(b % a, a) : b;
}

const ll llinf = 2e18 + 100;

const double eps = 1e-9;

const int maxn = 1e5 + 100, maxw = 1e7 + 100, inf = 2e9 + 100, sq = 300, mod = 1e9 + 7, LG = 17;

int n;

vector<int> e[maxn];

int d[maxn];

int a[maxn];

int main()
{
    #ifdef ONPC
    //ifstream cin("a.in");
    //ofstream cout("a.out");
    freopen("a.in", "r", stdin);
    freopen("a.out", "w", stdout);
    #else
    //ifstream cin("gymnasts.in");
    //ofstream cout("gymnasts.out");
    //freopen("sort.in", "r", stdin);
    //freopen("sort.out", "w", stdout);
    #endif // ONPC
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    int ans = inf;
    cin >> n;
    for (int i = 0; i < n; i++){
        int k;
        cin >> k;
        for (int j = 0; j < k; j++){
            int x;
            cin >> x;
            e[x - 1].push_back(i);
        }
    }
    for (int st = 0; st < n; st++){
        int now = 1;
        for (int i = 0; i < n; i++)
            d[i] = 0;
        d[st] = 1;
        int sz = 0;
        a[sz++] = st;
        for (int i = 0; i < sz; i++){
            int v = a[i];
            for (auto j : e[v])
            if (!d[j])
                d[j] = d[v] + 1, now += d[j], a[sz++] = j;
        }
        if (sz == n)
            setmin(ans, now);
    }
    cout << ans;
}

Subtask #1
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 2680 KB Output is correct
2 Correct 5 ms 2680 KB Output is correct
3 Correct 4 ms 2852 KB Output is correct
4 Correct 4 ms 2852 KB Output is correct
5 Correct 5 ms 2852 KB Output is correct
6 Correct 4 ms 2876 KB Output is correct

Subtask #2
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 2680 KB Output is correct
2 Correct 5 ms 2680 KB Output is correct
3 Correct 4 ms 2852 KB Output is correct
4 Correct 4 ms 2852 KB Output is correct
5 Correct 5 ms 2852 KB Output is correct
6 Correct 4 ms 2876 KB Output is correct
7 Correct 4 ms 3012 KB Output is correct
8 Correct 5 ms 3012 KB Output is correct
9 Correct 4 ms 3012 KB Output is correct
10 Correct 4 ms 3076 KB Output is correct
11 Correct 4 ms 3076 KB Output is correct

Subtask #3
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 2680 KB Output is correct
2 Correct 5 ms 2680 KB Output is correct
3 Correct 4 ms 2852 KB Output is correct
4 Correct 4 ms 2852 KB Output is correct
5 Correct 5 ms 2852 KB Output is correct
6 Correct 4 ms 2876 KB Output is correct
7 Correct 4 ms 3012 KB Output is correct
8 Correct 5 ms 3012 KB Output is correct
9 Correct 4 ms 3012 KB Output is correct
10 Correct 4 ms 3076 KB Output is correct
11 Correct 4 ms 3076 KB Output is correct
12 Correct 11 ms 3148 KB Output is correct
13 Correct 7 ms 3228 KB Output is correct
14 Correct 119 ms 3392 KB Output is correct
15 Correct 18 ms 3392 KB Output is correct
16 Correct 536 ms 3560 KB Output is correct
17 Correct 555 ms 3700 KB Output is correct
18 Correct 537 ms 3760 KB Output is correct