#include <bits/stdc++.h>
using namespace std;
#define task "test"
#define FOR(i, a, b) for(int i = (a); i <= (b); ++i)
#define FORD(i, a, b) for(int i = (a); i >= (b); --i)
#define sz(a) (int)(a).size()
#define all(a) (a).begin(), (a).end()
#define bit(s, i) (((s) >> (i)) & 1)
#define ii pair <int, int>
#define fi first
#define se second
#define ll long long
#define eb emplace_back
#define pb push_back
#define __builtin_popcount __builtin_popcountll
void solve();
int32_t main() {
if(fopen(task".inp", "r")) {
freopen(task".inp", "r", stdin);
freopen(task".out", "w", stdout);
}
cin.tie(0)->sync_with_stdio(0);
solve();
}
const int LG = 20;
int l, q, dp1[1<<LG], dp2[1<<LG], cnt[1<<LG], cntbit[1<<LG];
string s;
void solve() {
cin >> l >> q >> s;
FOR(i, 0, (1<<l)-1) {
dp1[i] += s[i]-'0';
dp2[i] += s[i]-'0';
cnt[i] += s[i]-'0';
}
FOR(mask, 0, (1<<l)-1) cntbit[mask] = __builtin_popcount(mask);
FOR(i, 0, l-1) {
FOR(mask, 0, (1<<l)-1) {
if(bit(mask, i)) {
dp1[mask] += dp1[mask^(1<<i)];
}
else {
dp2[mask] += dp2[mask^(1<<i)];
}
}
}
FOR(i, 1, q) {
string t; cin >> t;
reverse(all(t));
int qm = 0, one = 0, zero = 0;
FOR(j, 0, l-1) {
if(t[j] == '?') qm |= (1<<j);
else if(t[j] == '1') one |= (1<<j);
else zero |= (1<<j);
}
if(cntbit[qm] <= l/3){
int ans = 0;
for(int mask = qm;; mask = (mask-1)&qm) {
ans += cnt[mask | one];
if(mask == 0) break;
}
cout << ans << '\n';
}
else if(cntbit[one] <= l/3) {
int ans = 0;
for(int mask = one;; mask = (mask-1)&one) {
if((cnt[one] - cnt[mask]) & 1) ans = ans - dp1[mask | qm];
else ans = ans + dp1[mask | qm];
if(mask == 0) break;
}
cout << ans << '\n';
}
else {
int ans = 0;
for(int mask = zero;; mask = (mask-1)&zero) {
if(cnt[mask] & 1) ans = ans - dp2[one | mask];
else ans = ans + dp2[one | mask];
if(mask == 0) break;
}
cout << ans << '\n';
}
}
}
Compilation message
snake_escaping.cpp: In function 'int32_t main()':
snake_escaping.cpp:23:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
23 | freopen(task".inp", "r", stdin);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
snake_escaping.cpp:24:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
24 | freopen(task".out", "w", stdout);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
340 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
340 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
340 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
340 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
340 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
