Submission #673375

#	Time	Username	Problem	Language	Result	Execution time	Memory
673375		stevancv	Snake Escaping (JOI18_snake_escaping)	C++14	Compilation error	0 ms	0 KiB

snake_escaping

#include <bits/stdc++.h>
#define ll long long
#define ld long double
#define sp ' '
#define en '\n'
#define smin(a, b) a = min(a, b)
#define smax(a, b) a = max(a, b)
using namespace std;
const int N = 1e6 + 2;
const int mod = 1e9 + 7;
int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    int n, q;
    cin >> n >> q;
    int m = 1 << n;
    string s; cin >> s;
    vector<int> sum(m);
    for (int i = 0; i < m; i++) sum[i] = s[i] - '0';
    for (int i = 0; i < m; i++) {
        for (int j = 0; j < n; j++) {
            if ((1 << j) & i) sum[i] += sum[i ^ (1 << j)];
        }
    }
    while (q--) {
        string t; cin >> t;
        reverse(t.begin(), t.end());
        int x = 0, y = 0;
        for (int i = 0; i < n; i++) {
            if (s[i] == '0') x += 1 << i;
            if (s[i] == '1') y += 1 << i;
            if (s[i] == '?') z += 1 << i;
        }
        if (__builtin_popcount(x) <= 6) {
            int ans = 0;
            for (int smask = x; ; smask = (smask - 1) & mask) {

            }
        }
    }
    return 0;
}

Compilation message (stderr)

snake_escaping.cpp: In function 'int main()':
snake_escaping.cpp:33:30: error: 'z' was not declared in this scope
   33 |             if (s[i] == '?') z += 1 << i;
      |                              ^
snake_escaping.cpp:37:57: error: 'mask' was not declared in this scope; did you mean 'smask'?
   37 |             for (int smask = x; ; smask = (smask - 1) & mask) {
      |                                                         ^~~~
      |                                                         smask
snake_escaping.cpp:36:17: warning: unused variable 'ans' [-Wunused-variable]
   36 |             int ans = 0;
      |                 ^~~