#include<iostream>
using namespace std;
const int MAXN = 21;
int n, q, a, b, c;
char l[MAXN], cc;
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 r) {
return (r>='0' && r<='9') || r=='?';
}
inline char readc () {
do {
cc = getchar();
} while (!ok(cc));
return cc;
}
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++) {
a = b = 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;
if (pc[a] <= n/3) {
do {
sol += val[mask | c];
} while (mask = (mask-a) & a);
} else if (pc[b] <= n/3) {
do {
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 {
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:58:18: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
} while (mask = (mask-a) & a);
~~~~~^~~~~~~~~~~~~~
snake_escaping.cpp:66:18: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
} while (mask = (mask-b) & b);
~~~~~^~~~~~~~~~~~~~
snake_escaping.cpp:75:18: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
} while (mask = (mask-c) & c);
~~~~~^~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
376 KB |
Output is correct |
| 2 |
Correct |
4 ms |
500 KB |
Output is correct |
| 3 |
Correct |
4 ms |
500 KB |
Output is correct |
| 4 |
Correct |
3 ms |
516 KB |
Output is correct |
| 5 |
Correct |
4 ms |
584 KB |
Output is correct |
| 6 |
Correct |
3 ms |
596 KB |
Output is correct |
| 7 |
Correct |
3 ms |
652 KB |
Output is correct |
| 8 |
Correct |
3 ms |
664 KB |
Output is correct |
| 9 |
Correct |
3 ms |
664 KB |
Output is correct |
| 10 |
Correct |
3 ms |
792 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
376 KB |
Output is correct |
| 2 |
Correct |
4 ms |
500 KB |
Output is correct |
| 3 |
Correct |
4 ms |
500 KB |
Output is correct |
| 4 |
Correct |
3 ms |
516 KB |
Output is correct |
| 5 |
Correct |
4 ms |
584 KB |
Output is correct |
| 6 |
Correct |
3 ms |
596 KB |
Output is correct |
| 7 |
Correct |
3 ms |
652 KB |
Output is correct |
| 8 |
Correct |
3 ms |
664 KB |
Output is correct |
| 9 |
Correct |
3 ms |
664 KB |
Output is correct |
| 10 |
Correct |
3 ms |
792 KB |
Output is correct |
| 11 |
Correct |
370 ms |
4764 KB |
Output is correct |
| 12 |
Correct |
380 ms |
15080 KB |
Output is correct |
| 13 |
Correct |
359 ms |
15080 KB |
Output is correct |
| 14 |
Correct |
393 ms |
15080 KB |
Output is correct |
| 15 |
Correct |
370 ms |
15432 KB |
Output is correct |
| 16 |
Correct |
409 ms |
25088 KB |
Output is correct |
| 17 |
Correct |
386 ms |
25144 KB |
Output is correct |
| 18 |
Correct |
303 ms |
27136 KB |
Output is correct |
| 19 |
Correct |
424 ms |
27136 KB |
Output is correct |
| 20 |
Correct |
413 ms |
27136 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
376 KB |
Output is correct |
| 2 |
Correct |
4 ms |
500 KB |
Output is correct |
| 3 |
Correct |
4 ms |
500 KB |
Output is correct |
| 4 |
Correct |
3 ms |
516 KB |
Output is correct |
| 5 |
Correct |
4 ms |
584 KB |
Output is correct |
| 6 |
Correct |
3 ms |
596 KB |
Output is correct |
| 7 |
Correct |
3 ms |
652 KB |
Output is correct |
| 8 |
Correct |
3 ms |
664 KB |
Output is correct |
| 9 |
Correct |
3 ms |
664 KB |
Output is correct |
| 10 |
Correct |
3 ms |
792 KB |
Output is correct |
| 11 |
Correct |
370 ms |
4764 KB |
Output is correct |
| 12 |
Correct |
380 ms |
15080 KB |
Output is correct |
| 13 |
Correct |
359 ms |
15080 KB |
Output is correct |
| 14 |
Correct |
393 ms |
15080 KB |
Output is correct |
| 15 |
Correct |
370 ms |
15432 KB |
Output is correct |
| 16 |
Correct |
409 ms |
25088 KB |
Output is correct |
| 17 |
Correct |
386 ms |
25144 KB |
Output is correct |
| 18 |
Correct |
303 ms |
27136 KB |
Output is correct |
| 19 |
Correct |
424 ms |
27136 KB |
Output is correct |
| 20 |
Correct |
413 ms |
27136 KB |
Output is correct |
| 21 |
Correct |
369 ms |
27136 KB |
Output is correct |
| 22 |
Correct |
423 ms |
27136 KB |
Output is correct |
| 23 |
Correct |
443 ms |
27136 KB |
Output is correct |
| 24 |
Correct |
434 ms |
27136 KB |
Output is correct |
| 25 |
Correct |
450 ms |
40516 KB |
Output is correct |
| 26 |
Correct |
455 ms |
40516 KB |
Output is correct |
| 27 |
Correct |
440 ms |
40516 KB |
Output is correct |
| 28 |
Correct |
314 ms |
40516 KB |
Output is correct |
| 29 |
Correct |
349 ms |
40516 KB |
Output is correct |
| 30 |
Correct |
406 ms |
51864 KB |
Output is correct |
| 31 |
Correct |
511 ms |
65324 KB |
Output is correct |
| 32 |
Runtime error |
513 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. |
| 33 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
376 KB |
Output is correct |
| 2 |
Correct |
4 ms |
500 KB |
Output is correct |
| 3 |
Correct |
4 ms |
500 KB |
Output is correct |
| 4 |
Correct |
3 ms |
516 KB |
Output is correct |
| 5 |
Correct |
4 ms |
584 KB |
Output is correct |
| 6 |
Correct |
3 ms |
596 KB |
Output is correct |
| 7 |
Correct |
3 ms |
652 KB |
Output is correct |
| 8 |
Correct |
3 ms |
664 KB |
Output is correct |
| 9 |
Correct |
3 ms |
664 KB |
Output is correct |
| 10 |
Correct |
3 ms |
792 KB |
Output is correct |
| 11 |
Runtime error |
113 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 |
3 ms |
376 KB |
Output is correct |
| 2 |
Correct |
4 ms |
500 KB |
Output is correct |
| 3 |
Correct |
4 ms |
500 KB |
Output is correct |
| 4 |
Correct |
3 ms |
516 KB |
Output is correct |
| 5 |
Correct |
4 ms |
584 KB |
Output is correct |
| 6 |
Correct |
3 ms |
596 KB |
Output is correct |
| 7 |
Correct |
3 ms |
652 KB |
Output is correct |
| 8 |
Correct |
3 ms |
664 KB |
Output is correct |
| 9 |
Correct |
3 ms |
664 KB |
Output is correct |
| 10 |
Correct |
3 ms |
792 KB |
Output is correct |
| 11 |
Correct |
370 ms |
4764 KB |
Output is correct |
| 12 |
Correct |
380 ms |
15080 KB |
Output is correct |
| 13 |
Correct |
359 ms |
15080 KB |
Output is correct |
| 14 |
Correct |
393 ms |
15080 KB |
Output is correct |
| 15 |
Correct |
370 ms |
15432 KB |
Output is correct |
| 16 |
Correct |
409 ms |
25088 KB |
Output is correct |
| 17 |
Correct |
386 ms |
25144 KB |
Output is correct |
| 18 |
Correct |
303 ms |
27136 KB |
Output is correct |
| 19 |
Correct |
424 ms |
27136 KB |
Output is correct |
| 20 |
Correct |
413 ms |
27136 KB |
Output is correct |
| 21 |
Correct |
369 ms |
27136 KB |
Output is correct |
| 22 |
Correct |
423 ms |
27136 KB |
Output is correct |
| 23 |
Correct |
443 ms |
27136 KB |
Output is correct |
| 24 |
Correct |
434 ms |
27136 KB |
Output is correct |
| 25 |
Correct |
450 ms |
40516 KB |
Output is correct |
| 26 |
Correct |
455 ms |
40516 KB |
Output is correct |
| 27 |
Correct |
440 ms |
40516 KB |
Output is correct |
| 28 |
Correct |
314 ms |
40516 KB |
Output is correct |
| 29 |
Correct |
349 ms |
40516 KB |
Output is correct |
| 30 |
Correct |
406 ms |
51864 KB |
Output is correct |
| 31 |
Correct |
511 ms |
65324 KB |
Output is correct |
| 32 |
Runtime error |
513 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. |
| 33 |
Halted |
0 ms |
0 KB |
- |
