Submission #1227521
Source Code Expand
/+ dub.sdl:
name "A"
dependency "dcomp" version=">=0.6.0"
+/
import std.stdio, std.algorithm, std.range, std.conv;
import std.typecons;
// import dcomp.foundation, dcomp.scanner;
int main() {
auto sc = new Scanner(stdin);
long x, p;
sc.read(x, p);
double base = 0;
if (x % 2 == 1) {
x++;
}
base += (100.0/p) * (x/2);
writefln("%.20f", base);
return 0;
}
/* IMPORT /home/yosupo/Program/dcomp/source/dcomp/foundation.d */
// module dcomp.foundation;
//fold(for old compiler)
static if (__VERSION__ <= 2070) {
template fold(fun...) if (fun.length >= 1) {
auto fold(R, S...)(R r, S seed) {
import std.algorithm : reduce;
static if (S.length < 2) {
return reduce!fun(seed, r);
} else {
import std.typecons : tuple;
return reduce!fun(tuple(seed), r);
}
}
}
unittest {
import std.stdio;
auto l = [1, 2, 3, 4, 5];
assert(l.fold!"a+b"(10) == 25);
}
}
version (X86) static if (__VERSION__ < 2071) {
int bsf(ulong v) {
foreach (i; 0..64) {
if (v & (1UL << i)) return i;
}
return -1;
}
int bsr(ulong v) {
foreach_reverse (i; 0..64) {
if (v & (1UL << i)) return i;
}
return -1;
}
int popcnt(ulong v) {
int c = 0;
foreach (i; 0..64) {
if (v & (1UL << i)) c++;
}
return c;
}
}
/* IMPORT /home/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;
}
char[512] lineBuf;
char[] line;
private bool succ() {
import std.range.primitives : empty, front, popFront;
import std.ascii : isWhite;
while (true) {
while (!line.empty && line.front.isWhite) {
line.popFront;
}
if (!line.empty) break;
if (f.eof) return false;
line = lineBuf[];
f.readln(line);
}
return true;
}
private bool readSingle(T)(ref T x) {
import std.algorithm : findSplitBefore;
import std.string : strip;
import std.conv : parse;
if (!succ()) return false;
static if (isArray!T) {
alias E = ElementType!T;
static if (isSomeChar!E) {
//string or char[10] etc
//todo optimize
auto r = line.findSplitBefore(" ");
x = r[0].strip.dup;
line = r[1];
} else {
auto buf = line.split.map!(to!E).array;
static if (isStaticArray!T) {
//static
assert(buf.length == T.length);
}
x = buf;
line.length = 0;
}
} else {
x = line.parse!T;
}
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]));
}
unittest {
import std.path : buildPath;
import std.file : tempDir;
import std.algorithm : equal;
import std.stdio : File, writeln;
import std.datetime;
string fileName = buildPath(tempDir, "kyuridenanmaida.txt");
auto fout = File(fileName, "w");
foreach (i; 0..1_000_000) {
fout.writeln(3*i, " ", 3*i+1, " ", 3*i+2);
}
fout.close;
writeln("Scanner Speed Test(3*1,000,000 int)");
StopWatch sw;
sw.start;
Scanner sc = new Scanner(File(fileName, "r"));
foreach (i; 0..500_000) {
int a, b, c;
sc.read(a, b, c);
assert(a == 3*i);
assert(b == 3*i+1);
assert(c == 3*i+2);
}
foreach (i; 500_000..700_000) {
int[3] d;
sc.read(d);
int a = d[0], b = d[1], c = d[2];
assert(a == 3*i);
assert(b == 3*i+1);
assert(c == 3*i+2);
}
foreach (i; 700_000..1_000_000) {
int[] d;
sc.read(d);
assert(d.length == 3);
int a = d[0], b = d[1], c = d[2];
assert(a == 3*i);
assert(b == 3*i+1);
assert(c == 3*i+2);
}
writeln(sw.peek.msecs, "ms");
}
Submission Info
Submission Time |
|
Task |
A - Takahashi is Missing! |
User |
yosupo |
Language |
D (LDC 0.17.0) |
Score |
700 |
Code Size |
5504 Byte |
Status |
AC |
Exec Time |
1 ms |
Memory |
256 KB |
Judge Result
Set Name |
Sample |
Dataset1 |
Dataset2 |
Dataset3 |
Score / Max Score |
0 / 0 |
200 / 200 |
300 / 300 |
200 / 200 |
Status |
|
|
|
|
Set Name |
Test Cases |
Sample |
subtask_01_ex1.txt, subtask_03_ex2.txt, subtask_04_ex3.txt |
Dataset1 |
subtask_01_02.txt, subtask_01_03.txt, subtask_01_04.txt, subtask_01_ex1.txt, subtask_02_01.txt, subtask_02_02.txt, subtask_02_03.txt |
Dataset2 |
subtask_01_02.txt, subtask_01_03.txt, subtask_01_04.txt, subtask_01_ex1.txt, subtask_03_01.txt, subtask_03_02.txt, subtask_03_03.txt, subtask_03_04.txt, subtask_03_05.txt, subtask_03_ex2.txt |
Dataset3 |
subtask_01_02.txt, subtask_01_03.txt, subtask_01_04.txt, subtask_01_ex1.txt, subtask_02_01.txt, subtask_02_02.txt, subtask_02_03.txt, subtask_03_01.txt, subtask_03_02.txt, subtask_03_03.txt, subtask_03_04.txt, subtask_03_05.txt, subtask_03_ex2.txt, subtask_04_01.txt, subtask_04_02.txt, subtask_04_03.txt, subtask_04_04.txt, subtask_04_05.txt, subtask_04_06.txt, subtask_04_07.txt, subtask_04_08.txt, subtask_04_09.txt, subtask_04_ex3.txt |
Case Name |
Status |
Exec Time |
Memory |
subtask_01_02.txt |
AC |
1 ms |
256 KB |
subtask_01_03.txt |
AC |
1 ms |
256 KB |
subtask_01_04.txt |
AC |
1 ms |
256 KB |
subtask_01_ex1.txt |
AC |
1 ms |
256 KB |
subtask_02_01.txt |
AC |
1 ms |
256 KB |
subtask_02_02.txt |
AC |
1 ms |
256 KB |
subtask_02_03.txt |
AC |
1 ms |
256 KB |
subtask_03_01.txt |
AC |
1 ms |
256 KB |
subtask_03_02.txt |
AC |
1 ms |
256 KB |
subtask_03_03.txt |
AC |
1 ms |
256 KB |
subtask_03_04.txt |
AC |
1 ms |
256 KB |
subtask_03_05.txt |
AC |
1 ms |
256 KB |
subtask_03_ex2.txt |
AC |
1 ms |
256 KB |
subtask_04_01.txt |
AC |
1 ms |
256 KB |
subtask_04_02.txt |
AC |
1 ms |
256 KB |
subtask_04_03.txt |
AC |
1 ms |
256 KB |
subtask_04_04.txt |
AC |
1 ms |
256 KB |
subtask_04_05.txt |
AC |
1 ms |
256 KB |
subtask_04_06.txt |
AC |
1 ms |
256 KB |
subtask_04_07.txt |
AC |
1 ms |
256 KB |
subtask_04_08.txt |
AC |
1 ms |
256 KB |
subtask_04_09.txt |
AC |
1 ms |
256 KB |
subtask_04_ex3.txt |
AC |
1 ms |
256 KB |