oj.uz

답안 #817642

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
817642 2023-08-09T14:23:27 Z hariaakas646 Regions (IOI09_regions) C++17
55 / 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 = 300;
    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 2 ms 208 KB Output is correct
4 Correct 2 ms 208 KB Output is correct
5 Correct 6 ms 336 KB Output is correct
6 Correct 18 ms 336 KB Output is correct
7 Correct 17 ms 336 KB Output is correct
8 Correct 30 ms 464 KB Output is correct
9 Correct 23 ms 976 KB Output is correct
10 Correct 61 ms 1100 KB Output is correct
11 Correct 76 ms 1488 KB Output is correct
12 Correct 106 ms 2156 KB Output is correct
13 Correct 143 ms 2256 KB Output is correct
14 Correct 213 ms 2768 KB Output is correct
15 Correct 243 ms 5528 KB Output is correct

Subtask #2
40.0 / 85.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4981 ms 19884 KB Output is correct
2 Correct 2288 ms 15024 KB Output is correct
3 Execution timed out 8025 ms 16148 KB Time limit exceeded
4 Correct 249 ms 3280 KB Output is correct
5 Correct 254 ms 4944 KB Output is correct
6 Correct 2213 ms 29824 KB Output is correct
7 Correct 2011 ms 34012 KB Output is correct
8 Execution timed out 8031 ms 65752 KB Time limit exceeded
9 Correct 4599 ms 71600 KB Output is correct
10 Execution timed out 8009 ms 82848 KB Time limit exceeded
11 Runtime error 1250 ms 131072 KB Execution killed with signal 9
12 Correct 3496 ms 20196 KB Output is correct
13 Execution timed out 8019 ms 20992 KB Time limit exceeded
14 Execution timed out 8042 ms 35852 KB Time limit exceeded
15 Execution timed out 8029 ms 21928 KB Time limit exceeded
16 Execution timed out 8015 ms 25868 KB Time limit exceeded
17 Execution timed out 8019 ms 29140 KB Time limit exceeded