#include <cstdio>
#include <cstdint>
#include <vector>
using namespace std;
int main () {
int n, m;
scanf("%d %d", &n, &m);
vector<bool> res(n + 1, 0);
vector<pair<int64_t, int64_t> > commands;
for (int i = 0; i < m; ++i) {
int a, b;
scanf("%d %d", &a, &b);
commands.push_back(make_pair(1LL << (a - 1), 1LL << (b - 1)));
}
int64_t P2n = 1LL << n;
for (int64_t i = 0; i < P2n; ++i) {
int64_t soldiers = i;
int cnt = __builtin_popcount(soldiers);
for (int j = 0; j < m; ++j) {
pair<int64_t, int64_t> cmd = commands[j];
if ((soldiers & cmd.first) && !(soldiers & cmd.second)) {
soldiers &= ~cmd.first;
soldiers |= cmd.second;
}
}
for (int j = 0; j < n; ++j) {
if (soldiers & 1) {
break;
}
soldiers >>= 1;
}
if (__builtin_popcount(soldiers + 1) == 1) {
res[cnt] = !res[cnt];
}
}
for (int i = 1; i <= n; ++i) {
printf("%c%c", res[i] ? '1' : '0', i == n ? '\n' : ' ');
}
return 0;
}
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 | #include <cstdio> #include <cstdint> #include <vector> using namespace std; int main () { int n, m; scanf("%d %d", &n, &m); vector<bool> res(n + 1, 0); vector<pair<int64_t, int64_t> > commands; for (int i = 0; i < m; ++i) { int a, b; scanf("%d %d", &a, &b); commands.push_back(make_pair(1LL << (a - 1), 1LL << (b - 1))); } int64_t P2n = 1LL << n; for (int64_t i = 0; i < P2n; ++i) { int64_t soldiers = i; int cnt = __builtin_popcount(soldiers); for (int j = 0; j < m; ++j) { pair<int64_t, int64_t> cmd = commands[j]; if ((soldiers & cmd.first) && !(soldiers & cmd.second)) { soldiers &= ~cmd.first; soldiers |= cmd.second; } } for (int j = 0; j < n; ++j) { if (soldiers & 1) { break; } soldiers >>= 1; } if (__builtin_popcount(soldiers + 1) == 1) { res[cnt] = !res[cnt]; } } for (int i = 1; i <= n; ++i) { printf("%c%c", res[i] ? '1' : '0', i == n ? '\n' : ' '); } return 0; } |
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