結果
問題 | No.1078 I love Matrix Construction |
ユーザー | 草苺奶昔 |
提出日時 | 2023-02-21 11:41:23 |
言語 | Go (1.22.1) |
結果 |
AC
|
実行時間 | 447 ms / 2,000 ms |
コード長 | 4,388 bytes |
コンパイル時間 | 13,094 ms |
コンパイル使用メモリ | 228,628 KB |
実行使用メモリ | 91,392 KB |
最終ジャッジ日時 | 2024-07-21 23:48:45 |
合計ジャッジ時間 | 20,688 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge1 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 1 ms
5,248 KB |
testcase_01 | AC | 1 ms
5,248 KB |
testcase_02 | AC | 54 ms
16,384 KB |
testcase_03 | AC | 162 ms
36,352 KB |
testcase_04 | AC | 229 ms
49,024 KB |
testcase_05 | AC | 187 ms
40,448 KB |
testcase_06 | AC | 50 ms
14,336 KB |
testcase_07 | AC | 18 ms
7,296 KB |
testcase_08 | AC | 181 ms
40,320 KB |
testcase_09 | AC | 7 ms
5,376 KB |
testcase_10 | AC | 447 ms
91,392 KB |
testcase_11 | AC | 235 ms
49,536 KB |
testcase_12 | AC | 355 ms
75,392 KB |
testcase_13 | AC | 414 ms
86,656 KB |
testcase_14 | AC | 271 ms
59,264 KB |
testcase_15 | AC | 394 ms
79,744 KB |
testcase_16 | AC | 16 ms
6,272 KB |
testcase_17 | AC | 2 ms
5,376 KB |
testcase_18 | AC | 44 ms
11,264 KB |
testcase_19 | AC | 101 ms
22,400 KB |
testcase_20 | AC | 96 ms
22,272 KB |
testcase_21 | AC | 3 ms
5,376 KB |
ソースコード
package main import ( "bufio" "fmt" "os" ) func main() { in := bufio.NewReader(os.Stdin) out := bufio.NewWriter(os.Stdout) defer out.Flush() var n int fmt.Fscan(in, &n) S := make([]int, n) for i := 0; i < n; i++ { fmt.Fscan(in, &S[i]) S[i]-- } T := make([]int, n) for i := 0; i < n; i++ { fmt.Fscan(in, &T[i]) T[i]-- } U := make([]int, n) for i := 0; i < n; i++ { fmt.Fscan(in, &U[i]) } // 条件i为A[i][j]取0 ts := NewTwoSat(n * n) for i := 0; i < n; i++ { si := S[i] ti := T[i] for j := 0; j < n; j++ { pos1 := si*n + j pos2 := j*n + ti if U[i] == 0 { ts.AddNand(pos1, pos2) // 0,0 } else if U[i] == 1 { ts.AddNand(ts.Rev(pos1), pos2) //1,0 } else if U[i] == 2 { ts.AddNand(pos1, ts.Rev(pos2)) //0,1 } else if U[i] == 3 { ts.AddNand(ts.Rev(pos1), ts.Rev(pos2)) //1,1 } } } res, ok := ts.Solve() if !ok { fmt.Fprintln(out, -1) return } matrix := make([][]int, n) for i := 0; i < n; i++ { matrix[i] = make([]int, n) } for i, v := range res { if !v { matrix[i/n][i%n] = 1 } } for i := 0; i < n; i++ { for j := 0; j < n; j++ { fmt.Fprint(out, matrix[i][j], " ") } fmt.Fprintln(out) } } type TwoSat struct { sz int scc *StronglyConnectedComponents } func NewTwoSat(n int) *TwoSat { return &TwoSat{sz: n, scc: NewStronglyConnectedComponents(n + n)} } // u -> v <=> !v -> !u func (ts *TwoSat) AddIf(u, v int) { ts.scc.AddEdge(u, v) ts.scc.AddEdge(ts.Rev(v), ts.Rev(u)) } // u or v <=> !u -> v func (ts *TwoSat) AddOr(u, v int) { ts.AddIf(ts.Rev(u), v) } // u nand v <=> u -> !v func (ts *TwoSat) AddNand(u, v int) { ts.AddIf(u, ts.Rev(v)) } // u <=> !u -> u func (ts *TwoSat) SetTrue(u int) { ts.scc.AddEdge(ts.Rev(u), u) } // !u <=> u -> !u func (ts *TwoSat) SetFalse(u int) { ts.scc.AddEdge(u, ts.Rev(u)) } func (ts *TwoSat) Rev(u int) int { if u >= ts.sz { return u - ts.sz } return u + ts.sz } func (ts *TwoSat) Solve() (res []bool, ok bool) { ts.scc.Build() res = make([]bool, ts.sz) for i := 0; i < ts.sz; i++ { if ts.scc.Comp[i] == ts.scc.Comp[ts.Rev(i)] { return } res[i] = ts.scc.Comp[i] > ts.scc.Comp[ts.Rev(i)] } ok = true return } func min(a, b int) int { if a < b { return a } return b } func max(a, b int) int { if a > b { return a } return b } type Edge struct{ from, to int } type StronglyConnectedComponents struct { G [][]Edge // 原图 Dag [][]Edge // 强连通分量缩点后的顶点和边组成的DAG Comp []int //每个顶点所属的强连通分量的编号 Group [][]int // 每个强连通分量所包含的顶点 rg [][]Edge order []int used []bool } func NewStronglyConnectedComponents(n int) *StronglyConnectedComponents { return &StronglyConnectedComponents{G: make([][]Edge, n)} } func (scc *StronglyConnectedComponents) AddEdge(from, to int) { scc.G[from] = append(scc.G[from], Edge{from, to}) } func (scc *StronglyConnectedComponents) Build() { scc.rg = make([][]Edge, len(scc.G)) for i := range scc.G { for _, e := range scc.G[i] { scc.rg[e.to] = append(scc.rg[e.to], Edge{e.to, e.from}) } } scc.Comp = make([]int, len(scc.G)) for i := range scc.Comp { scc.Comp[i] = -1 } scc.used = make([]bool, len(scc.G)) for i := range scc.G { scc.dfs(i) } for i, j := 0, len(scc.order)-1; i < j; i, j = i+1, j-1 { scc.order[i], scc.order[j] = scc.order[j], scc.order[i] } ptr := 0 for _, v := range scc.order { if scc.Comp[v] == -1 { scc.rdfs(v, ptr) ptr++ } } dag := make([][]Edge, ptr) for i := range scc.G { for _, e := range scc.G[i] { x, y := scc.Comp[e.from], scc.Comp[e.to] if x == y { continue } dag[x] = append(dag[x], Edge{x, y}) } } scc.Dag = dag scc.Group = make([][]int, ptr) for i := range scc.G { scc.Group[scc.Comp[i]] = append(scc.Group[scc.Comp[i]], i) } } // 获取顶点k所属的强连通分量的编号 func (scc *StronglyConnectedComponents) Get(k int) int { return scc.Comp[k] } func (scc *StronglyConnectedComponents) dfs(idx int) { tmp := scc.used[idx] scc.used[idx] = true if tmp { return } for _, e := range scc.G[idx] { scc.dfs(e.to) } scc.order = append(scc.order, idx) } func (scc *StronglyConnectedComponents) rdfs(idx int, cnt int) { if scc.Comp[idx] != -1 { return } scc.Comp[idx] = cnt for _, e := range scc.rg[idx] { scc.rdfs(e.to, cnt) } }