#include<bits/stdc++.h>
#include<fstream>
#pragma GCC optimize("Ofast,O3,unroll-loops")
#pragma GCC target("avx2")
using namespace std;
//ifstream fin("FEEDING.INP");
//ofstream fout("FEEDING.OUT");
#define sz(a) (int)a.size()
#define ll long long
#define pb push_back
#define forr(i, a, b) for(int i = a; i < b; i++)
#define dorr(i, a, b) for(int i = a; i >= b; i--)
#define ld long double
#define vt vector
#include<fstream>
#define fi first
#define se second
#define pll pair<ll, ll>
#define pii pair<int, int>
const ll mxn = 3e5 + 5, base = 972663749;
const ll mod = 911382323, mxv = 1e9 + 1, inf = 2e9;
int l, q;
int big[(1 << 20)], small[(1 << 20)];
string s;
signed main()
{
ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
cin >> l >> q;
cin >> s;
for(int i = 0; i < (1 << l); i++){
big[i] = (s[i] - '0'); small[i] = (s[i] - '0');
}
for(int i = 0; i < l; i++){
for(int j = 0; j < (1 << l); j++){
if(j & (1 << i))small[j] += small[j ^ (1 << i)];
else (!(j & (1 << i)))big[j] = big[j ^ (1 << i)];
}
}
string ss;
while(q--){
cin >> ss;
int zero = 0, one = 0, que = 0;
for(int i = 0; i < l; i++){
if(ss[i] == '0')zero += (1 << (l - i - 1));
else if(ss[i] == '1')one += (1 << (l - i - 1));
else que += (1 << (l - i - 1));
}
int ans = 0;
if(__builtin_popcount(que) <= 6){
int mask = one;
for(int j = que;; j = (j - 1) & que){
//cout << (mask | j) << " ";
ans += (s[mask | j] - '0');
if(j == 0)break;
}
}else if(__builtin_popcount(one) <= 6){
int mask = que;
for(int j = one;; j = (j - 1) & one){
if((__builtin_popcount(one) - __builtin_popcount(j)) & 1)ans -= small[mask | j];
else ans += small[mask | j];
if(j == 0)break;
}
}else{
int mask = one;
for(int j = zero;; j = (j - 1) & zero){
if(__builtin_popcount(j) & 1)ans -= big[mask | j];
else ans += big[mask | j];
}
}
cout << ans << "\n";
}
return(0);
}
Compilation message
snake_escaping.cpp: In function 'int main()':
snake_escaping.cpp:37:35: error: expected ';' before 'big'
37 | else (!(j & (1 << i)))big[j] = big[j ^ (1 << i)];
| ^~~
| ;
