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답안 #958697

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
958697 2024-04-06T11:34:40 Z hariaakas646 Uzastopni (COCI15_uzastopni) C++14
144 / 160
 294 ms 65536 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;

void usaco()
{
    freopen("/media/hariaakash646/785EF1075EF0BF46/CompetitiveProgramming/input.in", "r", stdin);
//    freopen("problem.out", "w", stdout);
}

bool cmp(bitset<101> x, bitset<101> y) {
    bool out = false;
    frange(i, 101) {
        if(x[i] < y[i]) {
            out = true;
            break;
        }
        if(y[i] < x[i]) {
            out = false;
            break;
        }
    }
    return out;
}

vi val;
vvi graph;

vector<vector<bitset<101>>> dp;

bool verify(bitset<101> bt, int v1) {
    bool valid = true;
    int v = 1;
    forr(i, v1+1, 101) {
        if(bt[i] == 0) v = 0;
        if(bt[i] != v) {
            valid = false;
        }
    }
    v = 1;
    for(int i=v1-1; i>=1; i--) {
        if(bt[i] == 0) v = 0;
        if(bt[i] != v) {
            valid = false;
        }
    }
    return valid;      
}

void dfs(int x) {
    bitset<101> tmp;
    tmp[val[x]] = 1;
    dp[x].pb(tmp);
    vector<bitset<101>> glob;
    glob.pb(tmp);
    for(auto e : graph[x]) {
        dfs(e);
        vector<bitset<101>> curr;
        for(auto bt : dp[e]) {
            
            for(auto bt2 : glob) {
                if((bt & bt2).count()) continue;
                auto bt3 = (bt | bt2);
                curr.pb(bt3);
            }
        }
        dp[e] = {};
        for(auto bt : curr) {
            glob.pb(bt);
            if(verify(bt, val[x])) dp[x].pb(bt);
        }
    }
    sort(all(dp[x]), cmp);
    dp[x].erase(unique(all(dp[x])), dp[x].end());
}

int main() {
    // usaco();
    int n;
    scd(n);

    graph = vvi(n+1);
    val = vi(n+1);

    forr(i, 1, n+1) scd(val[i]);

    frange(i, n-1) {
        int a, b;
        scd(a);
        scd(b);
        graph[a].pb(b);
    }
    dp = vector<vector<bitset<101>>>(n+1);
    dfs(1);
    // vector<bitset<101>> up, down;
    // vector<bitset<101>> out;
    
    // for(auto e : graph[1]) {
    //     vector<bitset<101>> upt, downt;
    //     for(auto bt : dp[e]) {
    //         bool u = false;
    //         bool d = false;
    //         bool valid = true;
    //         int v = 1;
    //         forr(i, val[1]+1, 101) {
    //             if(bt[i] == 0) v = 0;
    //             if(v) u = true;
    //             if(bt[i] != v) {
    //                 valid = false;
    //             }
    //         }
    //         v = 1;
    //         for(int i=val[1]-1; i>=1; i--) {
    //             if(bt[i] == 0) v = 0;
    //             if(v) d = true;
    //             if(bt[i] != v) {
    //                 valid = false;
    //             }
    //         }
    //         if(valid) {
    //             out.pb(bt);
    //             if(u && !d) {
    //                 for(auto bt1 : down) {
    //                     out.pb(bt | bt1);
    //                 }
    //                 upt.pb(bt);
    //             }
    //             if(d && !u) {
    //                 for(auto bt1 : up) {
    //                     out.pb(bt | bt1);
    //                 }
    //                 downt.pb(bt);
    //             }
    //         }
    //     }
    //     for(auto e : downt) down.pb(e);
    //     for(auto e : upt) up.pb(e);
    // }
    printf("%d", (int)dp[1].size());
}

Compilation message

uzastopni.cpp: In function 'void usaco()':
uzastopni.cpp:29:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   29 |     freopen("/media/hariaakash646/785EF1075EF0BF46/CompetitiveProgramming/input.in", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
uzastopni.cpp: In function 'int main()':
uzastopni.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)
      |                ~~~~~^~~~~~~~~~
uzastopni.cpp:102:5: note: in expansion of macro 'scd'
  102 |     scd(n);
      |     ^~~
uzastopni.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)
      |                ~~~~~^~~~~~~~~~
uzastopni.cpp:107:21: note: in expansion of macro 'scd'
  107 |     forr(i, 1, n+1) scd(val[i]);
      |                     ^~~
uzastopni.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)
      |                ~~~~~^~~~~~~~~~
uzastopni.cpp:111:9: note: in expansion of macro 'scd'
  111 |         scd(a);
      |         ^~~
uzastopni.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)
      |                ~~~~~^~~~~~~~~~
uzastopni.cpp:112:9: note: in expansion of macro 'scd'
  112 |         scd(b);
      |         ^~~

Subtask #1
144.0 / 160.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 13 ms 1572 KB Output is correct
12 Correct 10 ms 1368 KB Output is correct
13 Correct 9 ms 1372 KB Output is correct
14 Correct 265 ms 14636 KB Output is correct
15 Correct 242 ms 14636 KB Output is correct
16 Correct 264 ms 14676 KB Output is correct
17 Correct 10 ms 1368 KB Output is correct
18 Correct 10 ms 1628 KB Output is correct
19 Runtime error 288 ms 65536 KB Execution killed with signal 9
20 Runtime error 294 ms 65536 KB Execution killed with signal 9