#include<iostream>
using namespace std;
const int MAXN = 21;
int n, q;
char l[MAXN];
int val[1<<MAXN], sum0[1<<MAXN], sum1[1<<MAXN], pc[1<<MAXN];
void precompute () {
for (int i=0; i<(1<<n); i++) {
pc[i] = __builtin_popcount(i);
sum0[i] = val[i];
sum1[i] = val[i ^ ((1<<n) - 1)];
}
for (int i=0; i<n; i++) {
for (int j=0; j<(1<<n); j++) {
if (j & (1<<i)) sum0[j] += sum0[j ^ (1<<i)];
if (j & (1<<i)) sum1[j] += sum1[j ^ (1<<i)];
}
}
}
inline bool ok (char c) {
return (c>='0' && c<='9') || c=='?';
}
inline char readc () {
char c;
do {
c = getchar();
} while (!ok(c));
return c;
}
int main () {
cin >> n >> q;
for (int i=0; i<(1<<n); i++) {
val[i] = readc() - '0';
}
precompute();
for (int tc=0; tc<q; tc++) {
int a = 0, b = 0, c = 0;
for (int i=0; i<n; i++) {
l[i] = readc();
if (l[i] == '?') {
a ^= (1<<(n-1-i));
} else if (l[i] == '0') {
b ^= (1<<(n-1-i));
} else {
c ^= (1<<(n-1-i));
}
}
int sol = 0, mask = 0, cnt = 0;
if (pc[a] <= n/3) {
do {
cnt++;
sol += val[mask | c];
} while (mask = (mask-a) & a);
} else if (pc[b] <= n/3) {
do {
cnt++;
if (pc[mask | a] & 1) {
sol -= sum1[mask | a];
} else {
sol += sum1[mask | a];
}
} while (mask = (mask-b) & b);
if (sol < 0) sol = -sol;
} else {
do {
cnt++;
if (pc[mask | a] & 1) {
sol -= sum0[mask | a];
} else {
sol += sum0[mask | a];
}
} while (mask = (mask-c) & c);
if (sol < 0) sol = -sol;
}
printf("%d\n", sol);
}
return 0;
}
Compilation message
snake_escaping.cpp: In function 'int main()':
snake_escaping.cpp:60:18: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
} while (mask = (mask-a) & a);
~~~~~^~~~~~~~~~~~~~
snake_escaping.cpp:69:18: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
} while (mask = (mask-b) & b);
~~~~~^~~~~~~~~~~~~~
snake_escaping.cpp:79:18: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
} while (mask = (mask-c) & c);
~~~~~^~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
4 ms |
376 KB |
Output is correct |
| 2 |
Correct |
4 ms |
556 KB |
Output is correct |
| 3 |
Correct |
4 ms |
556 KB |
Output is correct |
| 4 |
Correct |
4 ms |
584 KB |
Output is correct |
| 5 |
Correct |
4 ms |
584 KB |
Output is correct |
| 6 |
Correct |
3 ms |
604 KB |
Output is correct |
| 7 |
Correct |
3 ms |
604 KB |
Output is correct |
| 8 |
Correct |
3 ms |
604 KB |
Output is correct |
| 9 |
Correct |
3 ms |
604 KB |
Output is correct |
| 10 |
Correct |
4 ms |
604 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
4 ms |
376 KB |
Output is correct |
| 2 |
Correct |
4 ms |
556 KB |
Output is correct |
| 3 |
Correct |
4 ms |
556 KB |
Output is correct |
| 4 |
Correct |
4 ms |
584 KB |
Output is correct |
| 5 |
Correct |
4 ms |
584 KB |
Output is correct |
| 6 |
Correct |
3 ms |
604 KB |
Output is correct |
| 7 |
Correct |
3 ms |
604 KB |
Output is correct |
| 8 |
Correct |
3 ms |
604 KB |
Output is correct |
| 9 |
Correct |
3 ms |
604 KB |
Output is correct |
| 10 |
Correct |
4 ms |
604 KB |
Output is correct |
| 11 |
Correct |
422 ms |
4700 KB |
Output is correct |
| 12 |
Correct |
447 ms |
14624 KB |
Output is correct |
| 13 |
Correct |
408 ms |
14624 KB |
Output is correct |
| 14 |
Correct |
436 ms |
14624 KB |
Output is correct |
| 15 |
Correct |
373 ms |
14928 KB |
Output is correct |
| 16 |
Correct |
396 ms |
24888 KB |
Output is correct |
| 17 |
Correct |
516 ms |
32680 KB |
Output is correct |
| 18 |
Correct |
446 ms |
34420 KB |
Output is correct |
| 19 |
Correct |
327 ms |
34420 KB |
Output is correct |
| 20 |
Correct |
437 ms |
34420 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
4 ms |
376 KB |
Output is correct |
| 2 |
Correct |
4 ms |
556 KB |
Output is correct |
| 3 |
Correct |
4 ms |
556 KB |
Output is correct |
| 4 |
Correct |
4 ms |
584 KB |
Output is correct |
| 5 |
Correct |
4 ms |
584 KB |
Output is correct |
| 6 |
Correct |
3 ms |
604 KB |
Output is correct |
| 7 |
Correct |
3 ms |
604 KB |
Output is correct |
| 8 |
Correct |
3 ms |
604 KB |
Output is correct |
| 9 |
Correct |
3 ms |
604 KB |
Output is correct |
| 10 |
Correct |
4 ms |
604 KB |
Output is correct |
| 11 |
Correct |
422 ms |
4700 KB |
Output is correct |
| 12 |
Correct |
447 ms |
14624 KB |
Output is correct |
| 13 |
Correct |
408 ms |
14624 KB |
Output is correct |
| 14 |
Correct |
436 ms |
14624 KB |
Output is correct |
| 15 |
Correct |
373 ms |
14928 KB |
Output is correct |
| 16 |
Correct |
396 ms |
24888 KB |
Output is correct |
| 17 |
Correct |
516 ms |
32680 KB |
Output is correct |
| 18 |
Correct |
446 ms |
34420 KB |
Output is correct |
| 19 |
Correct |
327 ms |
34420 KB |
Output is correct |
| 20 |
Correct |
437 ms |
34420 KB |
Output is correct |
| 21 |
Correct |
407 ms |
34420 KB |
Output is correct |
| 22 |
Correct |
414 ms |
47564 KB |
Output is correct |
| 23 |
Correct |
448 ms |
60300 KB |
Output is correct |
| 24 |
Runtime error |
474 ms |
66560 KB |
Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience. |
| 25 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
4 ms |
376 KB |
Output is correct |
| 2 |
Correct |
4 ms |
556 KB |
Output is correct |
| 3 |
Correct |
4 ms |
556 KB |
Output is correct |
| 4 |
Correct |
4 ms |
584 KB |
Output is correct |
| 5 |
Correct |
4 ms |
584 KB |
Output is correct |
| 6 |
Correct |
3 ms |
604 KB |
Output is correct |
| 7 |
Correct |
3 ms |
604 KB |
Output is correct |
| 8 |
Correct |
3 ms |
604 KB |
Output is correct |
| 9 |
Correct |
3 ms |
604 KB |
Output is correct |
| 10 |
Correct |
4 ms |
604 KB |
Output is correct |
| 11 |
Runtime error |
120 ms |
66560 KB |
Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience. |
| 12 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
4 ms |
376 KB |
Output is correct |
| 2 |
Correct |
4 ms |
556 KB |
Output is correct |
| 3 |
Correct |
4 ms |
556 KB |
Output is correct |
| 4 |
Correct |
4 ms |
584 KB |
Output is correct |
| 5 |
Correct |
4 ms |
584 KB |
Output is correct |
| 6 |
Correct |
3 ms |
604 KB |
Output is correct |
| 7 |
Correct |
3 ms |
604 KB |
Output is correct |
| 8 |
Correct |
3 ms |
604 KB |
Output is correct |
| 9 |
Correct |
3 ms |
604 KB |
Output is correct |
| 10 |
Correct |
4 ms |
604 KB |
Output is correct |
| 11 |
Correct |
422 ms |
4700 KB |
Output is correct |
| 12 |
Correct |
447 ms |
14624 KB |
Output is correct |
| 13 |
Correct |
408 ms |
14624 KB |
Output is correct |
| 14 |
Correct |
436 ms |
14624 KB |
Output is correct |
| 15 |
Correct |
373 ms |
14928 KB |
Output is correct |
| 16 |
Correct |
396 ms |
24888 KB |
Output is correct |
| 17 |
Correct |
516 ms |
32680 KB |
Output is correct |
| 18 |
Correct |
446 ms |
34420 KB |
Output is correct |
| 19 |
Correct |
327 ms |
34420 KB |
Output is correct |
| 20 |
Correct |
437 ms |
34420 KB |
Output is correct |
| 21 |
Correct |
407 ms |
34420 KB |
Output is correct |
| 22 |
Correct |
414 ms |
47564 KB |
Output is correct |
| 23 |
Correct |
448 ms |
60300 KB |
Output is correct |
| 24 |
Runtime error |
474 ms |
66560 KB |
Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience. |
| 25 |
Halted |
0 ms |
0 KB |
- |
