제출 #995904

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
995904	2024-06-10 03:39:04	Neco_arc	Snake Escaping (JOI18_snake_escaping)	C++17	100 / 100	593 ms	46564 KiB

snake_escaping

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#include <bits/stdc++.h>
//#include <bits/debug.hpp>
#define ll long long
#define all(x) x.begin(), x.end()
#define Neco "Snake Escaping"
#define resp(x) sort(all(x)), x.resize(unique(all(x)) - x.begin())
#define getbit(x,i) ((x >> i)&1)
#define _left id * 2, l, mid
#define _right id * 2 + 1, mid + 1, r
#define cntbit(x) __builtin_popcountll(x)
#define fi(i, a, b) for(int i = a; i <= b; i++)
#define fid(i, a, b) for(int i = a; i >= b; i--)
#define maxn (int) 2e6 + 7
using namespace std;
const ll mod = 1e9 + 7; //972663749
const ll base = 911382323;
int N, q;
int a[maxn], f[2][maxn];
int CASE(int type, int P, int L) {
    int ans = 0;
    for(int x = P; ; x = (x - 1) & P)
    {
        int w = (cntbit(P) - cntbit(x)) & 1 ? -1 : 1;
        ans += w * f[type][x | L];
        if(x == 0) break;
 
 
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컴파일 시 표준 에러 (stderr) 메시지

snake_escaping.cpp: In function 'int main()':
snake_escaping.cpp:98:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   98 |         freopen(Neco".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
snake_escaping.cpp:99:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   99 |         freopen(Neco".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

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