oj.uz

답안 #527869

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
527869 2022-02-18T14:25:51 Z aris12345678 Deblo (COCI18_deblo) C++14
45 / 90
 1000 ms 7064 KB 
#include <bits/stdc++.h>
using namespace std;

typedef long long ll;

const int mxN = 1e5+5;
vector<int> adj[mxN];
int a[mxN];
ll res[mxN];

void bfs(int s) {
    queue<int> q;
    res[s] = a[s];
    q.push(s);
    while(!q.empty()) {
        int u = q.front();
        q.pop();
        for(auto &v : adj[u]) {
            if(res[v] == -1) {
                res[v] = 1LL*res[u]^a[v];
                q.push(v);
            }
        }
    }
}

int main() {
    int n;
    scanf("%d", &n);
    for(int i = 0; i < n; i++)
        scanf("%d", &a[i]);
    for(int i = 1; i < n; i++) {
        int u, v;
        scanf("%d %d", &u, &v);
        adj[u-1].push_back(v-1);
        adj[v-1].push_back(u-1);
    }
    ll ans = 0;
    for(int i = 0; i < n; i++) {
        for(int j = 0; j < n; j++)
            res[j] = -1;
        bfs(i);
        for(int j = i; j < n; j++)
            ans += res[j];
    }
    printf("%lld\n", ans);
    return 0;
}

Compilation message

deblo.cpp: In function 'int main()':
deblo.cpp:29:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   29 |     scanf("%d", &n);
      |     ~~~~~^~~~~~~~~~
deblo.cpp:31:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   31 |         scanf("%d", &a[i]);
      |         ~~~~~^~~~~~~~~~~~~
deblo.cpp:34:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   34 |         scanf("%d %d", &u, &v);
      |         ~~~~~^~~~~~~~~~~~~~~~~

Subtask #1
45.0 / 90.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2636 KB Output is correct
2 Correct 1 ms 2636 KB Output is correct
3 Correct 3 ms 2636 KB Output is correct
4 Correct 16 ms 2692 KB Output is correct
5 Correct 18 ms 2636 KB Output is correct
6 Execution timed out 1085 ms 6820 KB Time limit exceeded
7 Execution timed out 1091 ms 6892 KB Time limit exceeded
8 Execution timed out 1087 ms 6856 KB Time limit exceeded
9 Execution timed out 1093 ms 6852 KB Time limit exceeded
10 Execution timed out 1096 ms 7064 KB Time limit exceeded