Submission #330180

#	Time	Username	Problem	Language	Result	Execution time	Memory
330180		Kevin_Zhang_TW	Snake Escaping (JOI18_snake_escaping)	C++17	12 / 100	2087 ms	5484 KiB

snake_escaping

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
#define pb emplace_back
#define AI(i) begin(i), end(i)
template<class T>
bool chmax(T &a, T b) { return a < b ? (a = b, true) : false; }
template<class T> 
bool chmin(T &a, T b) { return b < a ? (a = b, true) : false; }
#ifdef KEV
#define DE(args...) kout("[ " + string(#args) + " ] = ", args)
void kout() { cerr << endl; }
template<class T, class ...U>
void kout(T a, U ...b) { cerr << a << ' ', kout(b...); }
template<class T>
void debug(T L, T R) { while (L != R) cerr << *L << " \n"[next(L) == R], ++L; }
#else
#define DE(...) 0
#define debug(...) 0
#endif

const int MAX_N = 20;
int n, q;
char w[(1<<MAX_N) + 10], com[MAX_N << 1];
int32_t main() {
	ios_base::sync_with_stdio(0), cin.tie(0);
	cin >> n >> q >> w;
	for (int i = 0;i < q;++i) {
		cin >> com;
		int l = 0, r = (1<<n) - 1, sub = 0;
		reverse(com, com + n);
		for (int i = 0;i < n;++i) {
			if (com[i] == '0') r ^= 1<<i;
			if (com[i] == '1') l ^= 1<<i;
			if (com[i] == '?') sub |= 1<<i;
		} 
		int res = 0;
		for (int s = sub ; s ;(--s) &= sub) {
			res += w[l | s] - '0';
		}
		res += w[l] - '0';
		cout << res << '\n'; 
		DE(com, res);
	}
} 

Compilation message (stderr)

snake_escaping.cpp: In function 'int32_t main()':
snake_escaping.cpp:18:17: warning: statement has no effect [-Wunused-value]
   18 | #define DE(...) 0
      |                 ^
snake_escaping.cpp:43:3: note: in expansion of macro 'DE'
   43 |   DE(com, res);
      |   ^~

• Subtask 1: 5 / 5
• Subtask 2: 7 / 7
• Subtask 3: 0 / 10
• Subtask 4: 0 / 53
• Subtask 5: 0 / 25