mirror of
https://github.com/Kiritow/OJ-Problems-Source.git
synced 2024-03-22 13:11:29 +08:00
67 lines
1.6 KiB
C++
67 lines
1.6 KiB
C++
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#include <cstdio>
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#include <iostream>
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#include <algorithm>
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#include <cstring>
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#include <vector>
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#include <map>
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using namespace std;
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typedef long long LL;
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#pragma comment(linker, "/STACK:102400000,102400000")
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#define pb push_back
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#define mp make_pair
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#define F first
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#define S second
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const int N = 33;
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int f[N], c[N], m[N], d[N], w[N];
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vector<int> a[N], b[N];
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typedef pair<int, int> pii;
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map<pii, LL> g[2];
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map<pii, LL>:: iterator it;
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int main() {
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int n, T;
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scanf("%d", &T);
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while (T--) {
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scanf("%d", &n);
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for (int i = 1; i <= 32; ++i) a[i].clear(), b[i].clear();
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memset(w, 0, sizeof(w));
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memset(d, 0, sizeof(d));
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g[0].clear(), g[1].clear();
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for (int i = 0; i < n; ++i) {
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scanf("%d%d%d", &f[i], &c[i], &m[i]);
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a[f[i]].pb(i), b[c[i]].pb(i);
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}
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bool ok = 1;
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int mask = 0, cnt = 0;
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for (int i = 1; i <= 32; ++i) {
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if (b[i].size() == 1) {
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if (d[f[b[i][0]]]) ok = 0;
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mask ^= m[b[i][0]];
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d[f[b[i][0]]] = 1;
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}
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else if (b[i].size() > 1) w[i] = cnt++;
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}
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if (!ok) {
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puts("0");
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continue;
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}
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int now = 0;
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g[now].insert(mp(mp(0, 0), 1));
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for (int i = 1; i <= 32; ++i) {
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if (!a[i].size() || d[i]) continue;
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g[now ^ 1] = g[now];
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for (it = g[now].begin(); it != g[now].end(); it++) {
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pii st = it -> F;
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LL d = it -> S;
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for (int j = 0; j < a[i].size(); ++j) {
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int t = a[i][j];
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pii tmp = mp(st.F ^ m[t], st.S | (1 << w[c[t]]));
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g[now ^ 1][tmp] += d;
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}
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}
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now ^= 1;
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}
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printf("%I64d\n", g[now][mp(mask, (1 << cnt) - 1)]);
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}
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return 0;
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}
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