結果
| 問題 |
No.466 ジオラマ
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2019-04-05 16:55:39 |
| 言語 | D (dmd 2.109.1) |
| 結果 |
AC
|
| 実行時間 | 11 ms / 2,000 ms |
| コード長 | 4,014 bytes |
| コンパイル時間 | 1,172 ms |
| コンパイル使用メモリ | 123,196 KB |
| 実行使用メモリ | 6,944 KB |
| 最終ジャッジ日時 | 2024-06-13 04:51:44 |
| 合計ジャッジ時間 | 4,148 ms |
|
ジャッジサーバーID (参考情報) |
judge5 / judge2 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 4 |
| other | AC * 83 |
ソースコード
import std.conv, std.functional, std.stdio, std.string;
import std.algorithm, std.array, std.bigint, std.container, std.math, std.numeric, std.range, std.regex, std.typecons;
import core.bitop;
class EOFException : Throwable { this() { super("EOF"); } }
string[] tokens;
string readToken() { for (; tokens.empty; ) { if (stdin.eof) { throw new EOFException; } tokens = readln.split; } auto token = tokens.front; tokens.popFront; return token; }
int readInt() { return readToken.to!int; }
long readLong() { return readToken.to!long; }
real readReal() { return readToken.to!real; }
bool chmin(T)(ref T t, in T f) { if (t > f) { t = f; return true; } else { return false; } }
bool chmax(T)(ref T t, in T f) { if (t < f) { t = f; return true; } else { return false; } }
int binarySearch(alias pred, T)(in T[] as) { int lo = -1, hi = cast(int)(as.length); for (; lo + 1 < hi; ) { const mid = (lo + hi) >> 1; (unaryFun!pred(as[mid]) ? hi : lo) = mid; } return hi; }
int lowerBound(T)(in T[] as, T val) { return as.binarySearch!(a => (a >= val)); }
int upperBound(T)(in T[] as, T val) { return as.binarySearch!(a => (a > val)); }
int A, B, C, D;
void main() {
try {
for (; ; ) {
A = readInt();
B = readInt();
C = readInt();
D = readInt();
// foreach(A;1..10)foreach(B;1..10)foreach(C;0..min(A,B)+1)foreach(D;0..10){
debug {
writeln([A, B, C, D]);
}
int V;
Tuple!(int, int)[] edges;
if (false) {
} else if (2 <= C && C == A && C == B && 2 + (C - 2) <= D) {
// 0<->1
edges ~= tuple(0, 1);
edges ~= tuple(1, 0);
V = 2;
foreach (i; 0 .. C - 2) {
edges ~= tuple(0, V++);
}
} else if (1 <= C && C == A && C < B && 1 + (C - 1) + (B - C - 1) <= D) {
// 1->0
edges ~= tuple(1, 0);
V = 2;
foreach (i; 0 .. C - 1) {
edges ~= tuple(0, V++);
}
foreach (i; 0 .. B - C - 1) {
edges ~= tuple(1, V++);
}
} else if (1 <= C && C < A && C == B && 1 + (C - 1) + (A - C - 1) <= D) {
// 0->1
edges ~= tuple(0, 1);
V = 2;
foreach (i; 0 .. C - 1) {
edges ~= tuple(1, V++);
}
foreach (i; 0 .. A - C - 1) {
edges ~= tuple(0, V++);
}
} else if (C == 0 && (A - 1) + (B - 1) <= D) {
// ...<-0, 1->...
V = 2;
foreach (i; 0 .. A - 1) {
edges ~= tuple(0, V++);
}
foreach (i; 0 .. B - 1) {
edges ~= tuple(1, V++);
}
} else if (1 <= C && C < A && C < B && 2 + (C - 1) + (A - C - 1) + (B - C - 1) <= D) {
// ...<-0->2<-1->...
V = 3;
edges ~= tuple(0, 2);
edges ~= tuple(1, 2);
foreach (i; 0 .. C - 1) {
edges ~= tuple(2, V++);
}
foreach (i; 0 .. A - C - 1) {
edges ~= tuple(0, V++);
}
foreach (i; 0 .. B - C - 1) {
edges ~= tuple(1, V++);
}
}
if (V) {
assert(V == A + B - C);
assert(edges.length <= D);
writeln(V, " ", edges.length);
foreach (e; edges) {
writeln(e[0], " ", e[1]);
}
debug {
auto graph = new int[][V];
foreach (e; edges) {
graph[e[0]] ~= e[1];
}
auto vis = new int[V];
void dfs(int f, int u) {
vis[u] |= f;
foreach (v; graph[u]) {
if (!(vis[v] & f)) {
dfs(f, v);
}
}
}
dfs(1, 0);
dfs(2, 1);
int a, b, c;
foreach (u; 0 .. V) {
if (vis[u] & 1) ++a;
if (vis[u] & 2) ++b;
if (vis[u] == 3) ++c;
}
debug {
writeln(vis, " ", a, " ", b, " ", c);
}
assert(a == A && b == B && c == C && edges.length <= D);
}
} else {
writeln(-1);
}
}
} catch (EOFException e) {
}
}