제출 #872081

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
872081	2023-11-12 09:24:35	sleepntsheep	Ball Machine (BOI13_ballmachine)	C++17	0 / 100	16 ms	8476 KiB

ballmachine

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#include <iostream>
#include <bitset>
#include <cstring>
#include <vector>
#include <algorithm>
#include <deque>
#include <set>
#include <utility>
#include <array>
using i64 = long long;
using u64 = unsigned long long;
using f64 = double;
using f80 = long double;
using namespace std;
#define ALL(x) x.begin(), x.end()
#define ShinLena cin.tie(nullptr)->sync_with_stdio(false);
#define N 100000
int root, n, q, L[N], J[N], P[N], alloc, ta[N], h[N], tin[N], rv[N], timer, t[N<<1];
char lz[N];
struct { int v, l; } g[N-1];
inline void link(int u, int v) {
    if (h[u]) g[++alloc] = {v, 0}, g[ta[u]].l = alloc, ta[u] = alloc;
    else g[++alloc] = {v, h[u]}, h[u] = ta[u] = alloc;
}
inline void push(int v, int l, int r)
 
 
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컴파일 시 표준 에러 (stderr) 메시지

ballmachine.cpp: In function 'int main()':
ballmachine.cpp:91:84: warning: operation on 'root' may be undefined [-Wsequence-point]
   91 |     for (int i = 0; i < n; ++i) cin >> P[i], (P[i] ? link(P[i]-1, i) : void(P[root = i] = root));
      |                                                                               ~~~~~^~~
ballmachine.cpp:91:84: warning: operation on 'root' may be undefined [-Wsequence-point]

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