oj.uz

답안 #521672

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
521672 2022-02-02T17:51:42 Z idas Tax Evasion (LMIO19_mokesciai) C++11
100 / 100
 395 ms 46380 KB 
#include <bits/stdc++.h>
#define FOR(i, begin, end) for(int i = (begin); i < (end); i++)
#define FAST_IO ios_base::sync_with_stdio(0); cin.tie(nullptr); cout.tie(nullptr)
#define f first
#define s second
#define pb push_back
#define sz(x) ((int)((x).size()))
#define le(vec) vec[vec.size()-1]
#define all(x) (x).begin(), (x).end()
#define TSTS int ttt; cin >> ttt; while(ttt--) solve()

using namespace std;
typedef long long ll;
typedef vector<int> vi;
typedef long double ld;
typedef map<int, int> mii;
typedef pair<int, int> pii;
typedef pair<long long, long long> pll;
typedef pair<long double, long double> pdd;

const int INF=1e9, MOD=1e9+7, mod=998244353;
const ll LINF=1e18;

void setIO()
{
    FAST_IO;
}

void setIO(string s)
{
    FAST_IO;
    freopen((s+".in").c_str(), "r", stdin);
    freopen((s+".out").c_str(), "w", stdout);
}

const int N=2e5+10, L=19;
int n, m, par[N][L], dp[N], dol[N];
vi ad[N], dollas;

void pre(int u, int pst)
{
    for(auto x : ad[u]){
        if(x==pst) continue;
        dp[x]=dp[u]+1;
        par[x][0]=u;
        pre(x, u);
    }
}

void build()
{
    FOR(i, 1, L)
    {
        FOR(j, 0, n)
        {
            par[j][i]=par[par[j][i-1]][i-1];
        }
    }
}

int lift(int u, int d)
{
    for(int i=L-1; i>=0; i--){
        if(d&(1<<i))
        u=par[u][i];
    }
    return u;
}

void place()
{
    for(auto x : dollas){
        dol[lift(x, (dp[x]-1)/2)]++;
    }
}

bool ok;
int tr(int u, int pst, int x)
{
    int tot=0;
    for(auto v : ad[u]){
        if(v==pst) continue;
        tot+=tr(v, u, x);
    }
    if(dp[u]>=x) tot++;
    if(tot<dol[u]) ok=false;
    tot-=dol[u];
    return tot;
}

bool can(int x)
{
    ok=true;
    tr(0,-1,x);
    return ok;
}

int main()
{
    setIO();
    cin >> n >> m;
    FOR(i, 0, n-1)
    {
        int x; cin >> x;
        ad[x-1].pb(i+1);
        ad[i+1].pb(x-1);
    }
    FOR(i, 0, m)
    {
        int x; cin >> x;
        dollas.pb(x-1);
    }

    pre(0,-1);
    build();
    place();

    int l=0, r=n;
    while(l<r){
        int m=(l+r+1)/2;
        if(can(m)) l=m;
        else r=m-1;
    }

    cout << l+1;
}

Compilation message

mokesciai.cpp: In function 'void setIO(std::string)':
mokesciai.cpp:32:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   32 |     freopen((s+".in").c_str(), "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
mokesciai.cpp:33:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   33 |     freopen((s+".out").c_str(), "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4940 KB Output is correct
2 Correct 2 ms 4936 KB Output is correct
3 Correct 6 ms 5968 KB Output is correct
4 Correct 5 ms 6000 KB Output is correct
5 Correct 5 ms 6004 KB Output is correct
6 Correct 150 ms 43776 KB Output is correct
7 Correct 153 ms 43716 KB Output is correct
8 Correct 4 ms 5920 KB Output is correct
9 Correct 226 ms 45808 KB Output is correct
10 Correct 241 ms 46380 KB Output is correct
11 Correct 187 ms 45056 KB Output is correct

Subtask #2
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 150 ms 43776 KB Output is correct
2 Correct 153 ms 43716 KB Output is correct
3 Correct 4 ms 5920 KB Output is correct
4 Correct 3 ms 5012 KB Output is correct
5 Correct 4 ms 5708 KB Output is correct
6 Correct 4 ms 5708 KB Output is correct
7 Correct 5 ms 5540 KB Output is correct
8 Correct 4 ms 5708 KB Output is correct
9 Correct 4 ms 5580 KB Output is correct
10 Correct 118 ms 34748 KB Output is correct
11 Correct 110 ms 34620 KB Output is correct
12 Correct 247 ms 28052 KB Output is correct
13 Correct 147 ms 36072 KB Output is correct
14 Correct 98 ms 27988 KB Output is correct
15 Correct 269 ms 28356 KB Output is correct
16 Correct 147 ms 35976 KB Output is correct
17 Correct 362 ms 28192 KB Output is correct
18 Correct 139 ms 37668 KB Output is correct
19 Correct 141 ms 29168 KB Output is correct
20 Correct 152 ms 28316 KB Output is correct
21 Correct 159 ms 28356 KB Output is correct
22 Correct 152 ms 28356 KB Output is correct
23 Correct 210 ms 28228 KB Output is correct
24 Correct 154 ms 28196 KB Output is correct

Subtask #3
39.0 / 39.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4940 KB Output is correct
2 Correct 2 ms 4936 KB Output is correct
3 Correct 6 ms 5968 KB Output is correct
4 Correct 5 ms 6000 KB Output is correct
5 Correct 5 ms 6004 KB Output is correct
6 Correct 3 ms 5012 KB Output is correct
7 Correct 4 ms 5708 KB Output is correct
8 Correct 4 ms 5708 KB Output is correct
9 Correct 5 ms 5540 KB Output is correct
10 Correct 4 ms 5708 KB Output is correct
11 Correct 4 ms 5580 KB Output is correct
12 Correct 4 ms 5920 KB Output is correct
13 Correct 3 ms 5020 KB Output is correct
14 Correct 3 ms 4940 KB Output is correct
15 Correct 3 ms 4940 KB Output is correct
16 Correct 2 ms 4940 KB Output is correct
17 Correct 2 ms 4940 KB Output is correct
18 Correct 4 ms 5708 KB Output is correct
19 Correct 4 ms 5708 KB Output is correct
20 Correct 5 ms 5836 KB Output is correct
21 Correct 5 ms 5580 KB Output is correct
22 Correct 5 ms 5580 KB Output is correct
23 Correct 5 ms 5708 KB Output is correct
24 Correct 5 ms 5580 KB Output is correct
25 Correct 5 ms 5708 KB Output is correct
26 Correct 6 ms 5532 KB Output is correct
27 Correct 4 ms 5808 KB Output is correct
28 Correct 5 ms 5836 KB Output is correct
29 Correct 4 ms 5524 KB Output is correct
30 Correct 5 ms 5752 KB Output is correct
31 Correct 4 ms 5580 KB Output is correct
32 Correct 5 ms 5544 KB Output is correct
33 Correct 4 ms 5484 KB Output is correct

Subtask #4
29.0 / 29.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 5020 KB Output is correct
2 Correct 3 ms 4940 KB Output is correct
3 Correct 3 ms 4940 KB Output is correct
4 Correct 2 ms 4940 KB Output is correct
5 Correct 2 ms 4940 KB Output is correct
6 Correct 4 ms 5708 KB Output is correct
7 Correct 4 ms 5708 KB Output is correct
8 Correct 5 ms 5836 KB Output is correct
9 Correct 5 ms 5580 KB Output is correct
10 Correct 5 ms 5580 KB Output is correct
11 Correct 5 ms 5708 KB Output is correct
12 Correct 5 ms 5580 KB Output is correct
13 Correct 5 ms 5708 KB Output is correct
14 Correct 6 ms 5532 KB Output is correct
15 Correct 4 ms 5808 KB Output is correct
16 Correct 5 ms 5836 KB Output is correct
17 Correct 4 ms 5524 KB Output is correct
18 Correct 5 ms 5752 KB Output is correct
19 Correct 4 ms 5580 KB Output is correct
20 Correct 5 ms 5544 KB Output is correct
21 Correct 4 ms 5484 KB Output is correct
22 Correct 2 ms 4940 KB Output is correct
23 Correct 2 ms 4936 KB Output is correct
24 Correct 6 ms 5968 KB Output is correct
25 Correct 5 ms 6000 KB Output is correct
26 Correct 5 ms 6004 KB Output is correct
27 Correct 3 ms 5012 KB Output is correct
28 Correct 4 ms 5708 KB Output is correct
29 Correct 4 ms 5708 KB Output is correct
30 Correct 5 ms 5540 KB Output is correct
31 Correct 4 ms 5708 KB Output is correct
32 Correct 4 ms 5580 KB Output is correct
33 Correct 150 ms 43776 KB Output is correct
34 Correct 153 ms 43716 KB Output is correct
35 Correct 4 ms 5920 KB Output is correct
36 Correct 118 ms 34748 KB Output is correct
37 Correct 110 ms 34620 KB Output is correct
38 Correct 247 ms 28052 KB Output is correct
39 Correct 147 ms 36072 KB Output is correct
40 Correct 98 ms 27988 KB Output is correct
41 Correct 269 ms 28356 KB Output is correct
42 Correct 147 ms 35976 KB Output is correct
43 Correct 362 ms 28192 KB Output is correct
44 Correct 139 ms 37668 KB Output is correct
45 Correct 141 ms 29168 KB Output is correct
46 Correct 152 ms 28316 KB Output is correct
47 Correct 159 ms 28356 KB Output is correct
48 Correct 152 ms 28356 KB Output is correct
49 Correct 210 ms 28228 KB Output is correct
50 Correct 154 ms 28196 KB Output is correct
51 Correct 226 ms 45808 KB Output is correct
52 Correct 241 ms 46380 KB Output is correct
53 Correct 187 ms 45056 KB Output is correct
54 Correct 115 ms 35372 KB Output is correct
55 Correct 129 ms 35348 KB Output is correct
56 Correct 139 ms 37524 KB Output is correct
57 Correct 115 ms 29116 KB Output is correct
58 Correct 243 ms 28156 KB Output is correct
59 Correct 171 ms 32828 KB Output is correct
60 Correct 309 ms 29916 KB Output is correct
61 Correct 249 ms 38280 KB Output is correct
62 Correct 395 ms 29724 KB Output is correct
63 Correct 169 ms 38760 KB Output is correct
64 Correct 157 ms 30056 KB Output is correct
65 Correct 170 ms 29164 KB Output is correct
66 Correct 186 ms 29628 KB Output is correct
67 Correct 182 ms 29560 KB Output is correct
68 Correct 242 ms 29312 KB Output is correct
69 Correct 220 ms 30068 KB Output is correct
70 Correct 60 ms 18068 KB Output is correct
71 Correct 141 ms 33512 KB Output is correct