Submission #1069854

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Source Code Expand

/+ dub.sdl:
    name "A"
    dependency "dcomp" version=">=0.4.0"
+/

import std.stdio, std.range, std.algorithm, std.conv;
// import dcomp.scanner, dcomp.algorithm, dcomp.array;

int[2][] shrink(int[2][] a) {
    auto xv = a.map!"a[0]".array;
    auto yv = a.map!"a[1]".array;
    xv = sort(xv).uniq.array;
    yv = sort(yv).uniq.array;
    foreach (ref v; a) {
        v[0] = binSearch!(i => xv[i] >= v[0])(-1, xv.length.to!int);
        v[1] = binSearch!(i => yv[i] >= v[1])(-1, yv.length.to!int);
    }
    return a;
}

int[2][] solve(int[] a) {
    int n = a.length.to!int;
    if (n == 4) {
        return [[0, 0], [1, 0], [1, 1], [0, 1]];
    }
    int rt = iota(n).find!(i => a[i] == -1 && a[(i+1)%n] == 1).front;
    bringToFront(a[0..rt], a[rt..$]);
    auto ch = solve(a[2..$]).map!(x => [x[0]*2, x[1]*2].fixed).array;
    int[2][] fr = new int[2][](2);
    if (ch[0][0] == ch[$-1][0]) {
        int ny = (ch[0][1]+ch[$-1][1])/2;
        fr[0] = [ch[0][0], ny];
        fr[1] = [ch[0][0]+1, ny];
        ch[0][0]++;
    } else {
        int nx = (ch[0][0]+ch[$-1][0])/2;
        fr[0] = [nx, ch[0][1]];
        fr[1] = [nx, ch[0][1]+1];
        ch[0][1]++;
    }
    fr ~= ch;
    bringToFront(fr[0..$-rt], fr[$-rt..$]);
    return fr.shrink;
}

int main() {
    auto sc = new Scanner(stdin);
    int n;
    sc.read(n);
    int[] a = new int[n];
    a.each!((ref x) => sc.read(x));
    sc.read(a);
    a = a.map!(x => (x == 90 ? 1 : -1)).array;
//    writeln(a);
    if (a.sum != 4) {
        writeln(-1);
        return 0;
    }
    writeln(solve(a).map!(x => x[].map!(to!string).join(" ")).join("\n"));
    return 0;
}
/* IMPORT /Users/yosupo/Program/dcomp/source/dcomp/array.d */
// module dcomp.array;

// import dcomp.memory;

struct FastAppender(A, bool useMyPool = false) {
    @disable this(this); //this is not reference type(don't copy!)

    import std.algorithm : max;
    import std.range.primitives : ElementEncodingType;
    import core.stdc.string : memcpy;

    private alias T = ElementEncodingType!A;
    private T* _data;
    private size_t len, cap;

    this(T[]* arr) {
        _data = (*arr).ptr;
        len = (*arr).length;
        cap = (*arr).length;
    }
    void reserve(size_t nlen) {
        import core.memory : GC;
        if (nlen <= cap) return;
        
        void* nx;
        static if (useMyPool) {
            nx = nowPool.malloc(nlen * T.sizeof);
        } else {
            nx = GC.malloc(nlen * T.sizeof);            
        }

        cap = nlen;
        if (len) memcpy(nx, _data, len * T.sizeof);
        _data = cast(T*)(nx);
    }
    void opOpAssign(string op : "~")(T item) {
        if (len == cap) {
            reserve(max(4, cap*2));
        }
        _data[len++] = item;
    }
    void clear() {
        len = 0;
    }    
    T[] data() {
        return (_data) ? _data[0..len] : null;
    }
}

T[N] fixed(T, int N)(T[N] a) {return a;}
/* IMPORT /Users/yosupo/Program/dcomp/source/dcomp/scanner.d */
// module dcomp.scanner;

class Scanner {
    import std.stdio : File;
    import std.conv : to;
    import std.range : front, popFront, array, ElementType;
    import std.array : split;
    import std.traits : isSomeChar, isStaticArray, isArray; 
    import std.algorithm : map;
    File f;
    this(File f) {
        this.f = f;
    }
    string[] buf;
    private bool succ() {
        while (!buf.length) {
            if (f.eof) return false;
            buf = f.readln.split;
        }
        return true;
    }
    private bool readSingle(T)(ref T x) {
        if (!succ()) return false;
        static if (isArray!T) {
            alias E = ElementType!T;
            static if (isSomeChar!E) {
                //string or char[10] etc
                x = buf.front;
                buf.popFront;
            } else {
                static if (isStaticArray!T) {
                    //static
                    assert(buf.length == T.length);
                }
                x = buf.map!(to!E).array;
                buf.length = 0;                
            }
        } else {
            x = buf.front.to!T;
            buf.popFront;            
        }
        return true;
    }
    int read(T, Args...)(ref T x, auto ref Args args) {
        if (!readSingle(x)) return 0;
        static if (args.length == 0) {
            return 1;
        } else {
            return 1 + read(args);
        }
    }
}

unittest {
    import std.path : buildPath;
    import std.file : tempDir;
    import std.algorithm : equal;
    import std.stdio : File;
    string fileName = buildPath(tempDir, "kyuridenanmaida.txt");
    auto fout = File(fileName, "w");
    fout.writeln("1 2 3");
    fout.writeln("ab cde");
    fout.writeln("1.0 1.0 2.0");
    fout.close;
    Scanner sc = new Scanner(File(fileName, "r"));
    int a;
    int[2] b;
    char[2] c;
    string d;
    double e;
    double[] f;
    sc.read(a, b, c, d, e, f);
    assert(a == 1);
    assert(equal(b[], [2, 3]));
    assert(equal(c[], "ab"));
    assert(equal(d, "cde"));
    assert(e == 1.0);
    assert(equal(f, [1.0, 2.0]));
}
/* IMPORT /Users/yosupo/Program/dcomp/source/dcomp/memory.d */
// module dcomp.memory;

MemoryPool _nowPool;

@property void nowPool(MemoryPool newPool) {
    _nowPool = newPool;
}
@property MemoryPool nowPool() {
    return _nowPool;
}

class MemoryPool {
    import core.memory : GC;
    import std.algorithm : max;

    static immutable Allign = 16;
    static immutable BIG = 2^^20;
    GC.BlkInfo[] blks;
    size_t e, idx, pos;
    this(size_t e) {
        this.e = e;
        idx = pos = 0;
    }
    void assign(size_t sz) {
        blks ~= GC.qalloc(sz);
    }
    void* malloc(size_t sz) {
        if (BIG < sz) {
            return GC.malloc(sz);
        }
        sz = (sz + Allign-1) / Allign * Allign;
        while (idx < blks.length && blks[idx].size < pos + sz) {
            idx++; pos = 0;
        }

        if (idx == blks.length) {
            assign(max(e, sz)); pos = 0;
        }
        pos += sz;
        assert(pos <= blks[idx].size);
        return cast(void *)(cast(byte *)(blks[idx].base) + pos - sz);
    }
    void allFree() {
        idx = pos = 0;
    }
}
/* IMPORT /Users/yosupo/Program/dcomp/source/dcomp/algorithm.d */
// module dcomp.algorithm;

//[0,0,0,...,1,1,1]で、初めて1となる場所を探す。pred(l) == 0, pred(r) == 1と仮定
T binSearch(alias pred, T)(T l, T r) {
    while (r-l > 1) {
        T md = (l+r)/2;
        if (!pred(md)) l = md;
        else r = md;
    }
    return r;
}

import std.range.primitives;

Rotator!Range rotator(Range)(Range r)
if (isForwardRange!Range && hasLength!Range) {
    return typeof(return)(r);
}

struct Rotator(Range)
if (isForwardRange!Range && hasLength!Range) {
    size_t cnt;
    Range start, now;
    this(Range r) {
        cnt = 0;
        start = r.save;
        now = r.save;
    }
    this(this) {
        start = start.save;
        now = now.save;
    }
    @property bool empty() {
        return now.empty;
    }
    @property auto front() {
        assert(!now.empty);
        import std.range : take, chain;
        return chain(now, start.take(cnt));
    }
    @property Rotator!Range save() {
        return this;
    }
    void popFront() {
        cnt++;
        now.popFront;
    }
}


E minimum(alias pred = "a < b", Range, E = ElementType!Range)(Range range, E seed)
if (isInputRange!Range && !isInfinite!Range && !is(CommonType!(ElementType!Range, E) == void)) {
    import std.functional;
    while (!range.empty) {
        if (binaryFun!pred(range.front, seed)) {
            seed = range.front;
        }
        range.popFront;
    }
    return seed;
}

//should be use reduce?
ElementType!Range minimum(alias pred = "a < b", Range)(Range range)
if (isInputRange!Range && !isInfinite!Range) {
    assert(!range.empty, "range must not empty");
    auto e = range.front; range.popFront;
    return minimum!pred(range, e);
}

E maximum(alias pred = "a < b", Range, E = ElementType!Range)(Range range, E seed)
if (isInputRange!Range && !isInfinite!Range && !is(CommonType!(ElementType!Range, E) == void)) {
    import std.functional;
    while (!range.empty) {
        if (binaryFun!pred(seed, range.front)) {
            seed = range.front;
        }
        range.popFront;
    }
    return seed;
}

ElementType!Range maximum(alias pred = "a < b", Range)(Range range)
if (isInputRange!Range && !isInfinite!Range) {
    assert(!range.empty, "range must not empty");
    auto e = range.front; range.popFront;
    return maximum!pred(range, e);
}

unittest {
    assert(minimum([2, 1, 3]) == 1);
    assert(minimum!"a > b"([2, 1, 3]) == 3);
    assert(minimum([2, 1, 3], -1) == -1);
    assert(minimum!"a > b"([2, 1, 3], 100) == 100);

    assert(maximum([2, 1, 3]) == 3);
    assert(maximum!"a > b"([2, 1, 3]) == 1);
    assert(maximum([2, 1, 3], 100) == 100);
    assert(maximum!"a > b"([2, 1, 3], -1) == -1);
}

bool[ElementType!Range] toMap(Range)(Range r) {
    import std.algorithm : each;
    bool[ElementType!Range] res;
    r.each!(a => res[a] = true);
    return res;
}

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