oj.uz

답안 #817654

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
817654 2023-08-09T14:35:58 Z hariaakas646 Regions (IOI09_regions) C++17
75 / 100
 8000 ms 34324 KB 
#include <bits/stdc++.h>

using namespace std;

#define scd(t) scanf("%d", &t)
#define sclld(t) scanf("%lld", &t)
#define forr(i, j, k) for (int i = j; i < k; i++)
#define frange(i, j) forr(i, 0, j)
#define all(cont) cont.begin(), cont.end()
#define mp make_pair
#define pb push_back
#define f first
#define s second
typedef long long int lli;
typedef pair<int, int> pii;
typedef vector<int> vi;
typedef vector<bool> vb;
typedef vector<lli> vll;
typedef vector<string> vs;
typedef vector<pii> vii;
typedef vector<vi> vvi;
typedef map<int, int> mpii;
typedef set<int> seti;
typedef multiset<int> mseti;
typedef long double ld;

vvi reg, graph;
vi regi;
vi st, en;
int timer = 0;

void dfs(int x, int par, vll &vec)
{
    vec[regi[x]]++;
    for (auto e : graph[x])
    {
        if (e != par)
        {
            dfs(e, x, vec);
        }
    }
}

void euler(int x, int par)
{
    st[x] = ++timer;
    for (auto e : graph[x])
    {
        if (e != par)
        {
            euler(e, x);
        }
    }
    en[x] = timer;
}

int main()
{
    int n, r, q;
    scd(n);
    scd(r);
    scd(q);
    int x = 500;
    reg = vvi(r + 1);
    regi = vi(n + 1);
    int h;
    scd(h);
    reg[h].pb(1);
    regi[1] = h;
    graph = vvi(n + 1);
    vi par(n + 1);

    forr(i, 2, n + 1)
    {
        int p, h;
        scd(p);
        scd(h);
        reg[h].pb(i);
        graph[i].pb(p);
        graph[p].pb(i);
        regi[i] = h;
        par[i] = p;
    }

    vector<vll> prec(r + 1);

    forr(i, 1, r + 1)
    {
        if (reg[i].size() > x)
        {
            vll out(n+1);
            for(auto e : reg[i])
            dfs(e, par[e], out);
            prec[i] = out;
        }
    }
    st = en = vi(n + 1);
    vvi pos(r + 1);
    euler(1, 0);
    forr(i, 1, r + 1)
    {
        for (auto e : reg[i])
        {
            pos[i].pb(st[e]);
        }
        sort(all(pos[i]));
        // printf("%d\n", i);
        // for(auto e : pos[i]) printf("%d  ", e);
        // printf("\n");
    }
    
    frange(_, q)
    {
        int a, b;
        scd(a);
        scd(b);
        if (reg[a].size() > x)
        {
            printf("%lld\n", prec[a][b]);
            fflush(stdout);
        }
        else
        {
            lli tot = 0;
            for (auto e : reg[a])
            {
                tot += upper_bound(all(pos[b]), en[e]) - lower_bound(all(pos[b]), st[e]);
                // printf("%d %d %lld\n", st[e], en[e], tot);
            }
            printf("%lld\n", tot);
            fflush(stdout);
        }
    }
}

Compilation message

regions.cpp: In function 'int main()':
regions.cpp:89:27: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   89 |         if (reg[i].size() > x)
      |             ~~~~~~~~~~~~~~^~~
regions.cpp:117:27: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
  117 |         if (reg[a].size() > x)
      |             ~~~~~~~~~~~~~~^~~
regions.cpp:5:21: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
    5 | #define scd(t) scanf("%d", &t)
      |                ~~~~~^~~~~~~~~~
regions.cpp:60:5: note: in expansion of macro 'scd'
   60 |     scd(n);
      |     ^~~
regions.cpp:5:21: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
    5 | #define scd(t) scanf("%d", &t)
      |                ~~~~~^~~~~~~~~~
regions.cpp:61:5: note: in expansion of macro 'scd'
   61 |     scd(r);
      |     ^~~
regions.cpp:5:21: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
    5 | #define scd(t) scanf("%d", &t)
      |                ~~~~~^~~~~~~~~~
regions.cpp:62:5: note: in expansion of macro 'scd'
   62 |     scd(q);
      |     ^~~
regions.cpp:5:21: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
    5 | #define scd(t) scanf("%d", &t)
      |                ~~~~~^~~~~~~~~~
regions.cpp:67:5: note: in expansion of macro 'scd'
   67 |     scd(h);
      |     ^~~
regions.cpp:5:21: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
    5 | #define scd(t) scanf("%d", &t)
      |                ~~~~~^~~~~~~~~~
regions.cpp:76:9: note: in expansion of macro 'scd'
   76 |         scd(p);
      |         ^~~
regions.cpp:5:21: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
    5 | #define scd(t) scanf("%d", &t)
      |                ~~~~~^~~~~~~~~~
regions.cpp:77:9: note: in expansion of macro 'scd'
   77 |         scd(h);
      |         ^~~
regions.cpp:5:21: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
    5 | #define scd(t) scanf("%d", &t)
      |                ~~~~~^~~~~~~~~~
regions.cpp:115:9: note: in expansion of macro 'scd'
  115 |         scd(a);
      |         ^~~
regions.cpp:5:21: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
    5 | #define scd(t) scanf("%d", &t)
      |                ~~~~~^~~~~~~~~~
regions.cpp:116:9: note: in expansion of macro 'scd'
  116 |         scd(b);
      |         ^~~

Subtask #1
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Correct 1 ms 208 KB Output is correct
4 Correct 2 ms 208 KB Output is correct
5 Correct 5 ms 336 KB Output is correct
6 Correct 12 ms 336 KB Output is correct
7 Correct 11 ms 336 KB Output is correct
8 Correct 25 ms 464 KB Output is correct
9 Correct 30 ms 848 KB Output is correct
10 Correct 65 ms 1104 KB Output is correct
11 Correct 88 ms 1536 KB Output is correct
12 Correct 103 ms 2184 KB Output is correct
13 Correct 135 ms 2256 KB Output is correct
14 Correct 212 ms 2844 KB Output is correct
15 Correct 215 ms 5528 KB Output is correct

Subtask #2
60.0 / 85.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4951 ms 14084 KB Output is correct
2 Correct 2401 ms 15140 KB Output is correct
3 Execution timed out 8023 ms 16212 KB Time limit exceeded
4 Correct 194 ms 3280 KB Output is correct
5 Correct 250 ms 4952 KB Output is correct
6 Correct 1221 ms 5436 KB Output is correct
7 Correct 1280 ms 7264 KB Output is correct
8 Correct 997 ms 12692 KB Output is correct
9 Correct 1841 ms 15256 KB Output is correct
10 Correct 3631 ms 21120 KB Output is correct
11 Correct 3770 ms 19700 KB Output is correct
12 Correct 3414 ms 20192 KB Output is correct
13 Correct 7363 ms 20992 KB Output is correct
14 Execution timed out 8095 ms 34324 KB Time limit exceeded
15 Execution timed out 8028 ms 20296 KB Time limit exceeded
16 Execution timed out 8061 ms 25876 KB Time limit exceeded
17 Execution timed out 8045 ms 29204 KB Time limit exceeded