diff options
| author | Gloria Mundi <gloria@gloria-mundi.eu> | 2024-11-16 01:24:14 +0100 |
|---|---|---|
| committer | Gloria Mundi <gloria@gloria-mundi.eu> | 2024-11-16 01:24:14 +0100 |
| commit | 98567ec798aa8ca2cfbcb85c774dd470f30e30d4 (patch) | |
| tree | 5113d5cc24d1ad5f93810b6442ce584a36950dc8 /graph/2sat.cpp | |
| parent | ad3856a6b766087df0036de0b556f4700a6498c9 (diff) | |
| parent | 8d11c6c8213f46f0fa19826917c255edd5d43cb1 (diff) | |
mzuenni tests
Diffstat (limited to 'graph/2sat.cpp')
| -rw-r--r-- | graph/2sat.cpp | 31 |
1 files changed, 0 insertions, 31 deletions
diff --git a/graph/2sat.cpp b/graph/2sat.cpp deleted file mode 100644 index 75e54e6..0000000 --- a/graph/2sat.cpp +++ /dev/null @@ -1,31 +0,0 @@ -struct sat2 { - int n; // + scc variablen - vector<int> sol; - - sat2(int vars) : n(vars*2), adj(n) {} - - static int var(int i) {return i << 1;} // use this! - - void addImpl(int a, int b) { - adj[a].push_back(b); - adj[1^b].push_back(1^a); - } - void addEquiv(int a, int b) {addImpl(a, b); addImpl(b, a);} - void addOr(int a, int b) {addImpl(1^a, b);} - void addXor(int a, int b) {addOr(a, b); addOr(1^a, 1^b);} - void addTrue(int a) {addImpl(1^a, a);} - void addFalse(int a) {addTrue(1^a);} - void addAnd(int a, int b) {addTrue(a); addTrue(b);} - void addNand(int a, int b) {addOr(1^a, 1^b);} - - bool solve() { - scc(); //scc code von oben - sol.assign(n, -1); - for (int i = 0; i < n; i += 2) { - if (idx[i] == idx[i + 1]) return false; - sol[i] = idx[i] < idx[i + 1]; - sol[i + 1] = !sol[i]; - } - return true; - } -}; |
