답안 #817626

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
817626 2023-08-09T14:12:29 Z hariaakas646 Regions (IOI09_regions) C++17
15 / 100
8000 ms 131072 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);
      |         ^~~
# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 1 ms 208 KB Output is correct
3 Correct 2 ms 208 KB Output is correct
4 Correct 2 ms 336 KB Output is correct
5 Correct 6 ms 464 KB Output is correct
6 Correct 15 ms 1872 KB Output is correct
7 Correct 18 ms 2128 KB Output is correct
8 Correct 21 ms 3536 KB Output is correct
9 Correct 106 ms 12580 KB Output is correct
10 Correct 85 ms 34000 KB Output is correct
11 Correct 150 ms 33160 KB Output is correct
12 Correct 605 ms 72572 KB Output is correct
13 Correct 122 ms 66208 KB Output is correct
14 Correct 236 ms 49768 KB Output is correct
15 Correct 6076 ms 80680 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Execution timed out 8077 ms 117360 KB Time limit exceeded
2 Runtime error 826 ms 131072 KB Execution killed with signal 9
3 Runtime error 4930 ms 131072 KB Execution killed with signal 9
4 Runtime error 138 ms 131072 KB Execution killed with signal 9
5 Runtime error 259 ms 131072 KB Execution killed with signal 9
6 Runtime error 132 ms 131072 KB Execution killed with signal 9
7 Runtime error 165 ms 131072 KB Execution killed with signal 9
8 Runtime error 446 ms 131072 KB Execution killed with signal 9
9 Runtime error 292 ms 131072 KB Execution killed with signal 9
10 Runtime error 144 ms 131072 KB Execution killed with signal 9
11 Runtime error 115 ms 131072 KB Execution killed with signal 9
12 Runtime error 182 ms 131072 KB Execution killed with signal 9
13 Runtime error 367 ms 131072 KB Execution killed with signal 9
14 Runtime error 175 ms 131072 KB Execution killed with signal 9
15 Runtime error 437 ms 131072 KB Execution killed with signal 9
16 Runtime error 742 ms 131072 KB Execution killed with signal 9
17 Runtime error 439 ms 131072 KB Execution killed with signal 9