結果
| 問題 |
No.1316 Maximum Minimum Spanning Tree
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2020-12-13 00:46:14 |
| 言語 | D (dmd 2.109.1) |
| 結果 |
RE
|
| 実行時間 | - |
| コード長 | 2,692 bytes |
| コンパイル時間 | 778 ms |
| コンパイル使用メモリ | 122,156 KB |
| 実行使用メモリ | 6,948 KB |
| 最終ジャッジ日時 | 2024-06-22 10:17:27 |
| 合計ジャッジ時間 | 2,405 ms |
|
ジャッジサーバーID (参考情報) |
judge4 / judge1 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 1 RE * 3 |
| other | AC * 20 RE * 58 |
ソースコード
import std.conv, std.functional, std.range, std.stdio, std.string;
import std.algorithm, std.array, std.bigint, std.bitmanip, std.complex, std.container, std.math, std.mathspecial, std.numeric, 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)); }
struct MinCut {
int n;
long[][] adj;
this(int n_) {
n = n_;
adj = new long[][](n, n);
}
void ae(int u, int v, long c) {
adj[u][v] += c;
adj[v][u] += c;
}
long solve() {
long ret = long.max;
auto p = iota(n).array;
auto b = new long[n];
for (; --n; ) {
foreach (u; 0 .. n + 1) b[p[u]] = 0;
foreach (u; 0 .. n) {
int vm = u + 1;
foreach (v; u + 1 .. n + 1) {
b[p[v]] += adj[p[u]][p[v]];
if (b[p[vm]] < b[p[v]]) vm = v;
}
swap(p[u + 1], p[vm]);
}
chmin(ret, b[p[n]]);
foreach (u; 0 .. n - 1) {
adj[p[u]][p[n - 1]] += adj[p[u]][p[n]];
adj[p[n - 1]][p[u]] += adj[p[n]][p[u]];
}
}
return ret;
}
};
void main() {
try {
for (; ; ) {
const N = readInt();
const M = readInt();
const K = readLong();
auto A = new int[M];
auto B = new int[M];
auto C = new long[M];
auto D = new long[M];
foreach (i; 0 .. M) {
A[i] = readInt() - 1;
B[i] = readInt() - 1;
C[i] = readLong();
D[i] = readLong();
}
auto mc = new MinCut(N);
foreach (i; 0 .. M) {
mc.ae(A[i], B[i], D[i]);
}
const res = mc.solve;
debug {
writeln("res = ", res);
}
long ans;
if (res < K) {
ans = -1;
} else {
import core.stdc.stdlib;
exit(1);
}
writeln(ans);
}
} catch (EOFException e) {
}
}