제출 #330921

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
330921	2020-11-26 21:49:22	ZwariowanyMarcin	XOR (IZhO12_xor)	C++14	0 / 100	2045 ms	94188 KiB

xor

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#include <bits/stdc++.h>
#define pb push_back
#define fi first
#define se second
#define sz(x) (int)x.size()
using ll = long long;
using namespace std;
const int M = 8000000;
int n, q, a, b, cnt, to[M][2], mn[M];
pair<int, int> res;
int add(int pos, int x) {
  int v = 0;
  for (int i = 30; 0 <= i; --i) {
    int b = (x >> i & 1);
    if (!to[v][b]) to[v][b] = ++cnt;
    v = to[v][b];
    mn[v] = min(mn[v], pos);
  }
}
int query(int x) {
  int v = 0, res = 1 << 30;
  for (int i = 30; 0 <= i; --i) {
    int b = (x >> i & 1);
    if (q >> i & 1) 
      v = to[v][!b];
 
 
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컴파일 시 표준 에러 (stderr) 메시지

xor.cpp: In function 'int add(int, int)':
xor.cpp:23:1: warning: no return statement in function returning non-void [-Wreturn-type]
   23 | }
      | ^
xor.cpp: In function 'int main()':
xor.cpp:43:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   43 |  scanf("%d%d", &n, &q);
      |  ~~~~~^~~~~~~~~~~~~~~~
xor.cpp:46:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   46 |   scanf("%d", &a);
      |   ~~~~~^~~~~~~~~~

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