Submission #1518770
Source Code Expand
import std.stdio;
import std.string;
import std.conv;
import std.typecons;
import std.algorithm;
import std.functional;
import std.bigint;
import std.numeric;
import std.array;
import std.math;
import std.range;
import std.container;
import std.ascii;
import std.concurrency;
long INF = long.max/3;
void main() {
int N = readln.chomp.to!int;
long[] as = new long[N];
int[] bs = new int[N+1];
string[] input = ["+"] ~ readln.split.array;
foreach(i; 0..N) {
as[i] = input[2*i+1].to!long;
bs[i] = input[2*i] == "-" ? 1 : 0;
}
long f(int i, int j) {
if (j>2) return memoize!f(i, 2);
if (i==N) return 0;
return (j+1).iota.map!(
k => memoize!f(i+1, k + bs[i+1])
).reduce!max + as[i]*((-1)^^j);
}
f(0, 0).writeln;
}
// ----------------------------------------------
void times(alias fun)(int n) {
// n.iota.each!(i => fun());
foreach(i; 0..n) fun();
}
auto rep(alias fun, T = typeof(fun()))(int n) {
// return n.iota.map!(i => fun()).array;
T[] res = new T[n];
foreach(ref e; res) e = fun();
return res;
}
// fold was added in D 2.071.0
static if (__VERSION__ < 2071) {
template fold(fun...) if (fun.length >= 1) {
auto fold(R, S...)(R r, S seed) {
static if (S.length < 2) {
return reduce!fun(seed, r);
} else {
return reduce!fun(tuple(seed), r);
}
}
}
}
// cumulativeFold was added in D 2.072.0
static if (__VERSION__ < 2072) {
template cumulativeFold(fun...)
if (fun.length >= 1)
{
import std.meta : staticMap;
private alias binfuns = staticMap!(binaryFun, fun);
auto cumulativeFold(R)(R range)
if (isInputRange!(Unqual!R))
{
return cumulativeFoldImpl(range);
}
auto cumulativeFold(R, S)(R range, S seed)
if (isInputRange!(Unqual!R))
{
static if (fun.length == 1)
return cumulativeFoldImpl(range, seed);
else
return cumulativeFoldImpl(range, seed.expand);
}
private auto cumulativeFoldImpl(R, Args...)(R range, ref Args args)
{
import std.algorithm.internal : algoFormat;
static assert(Args.length == 0 || Args.length == fun.length,
algoFormat("Seed %s does not have the correct amount of fields (should be %s)",
Args.stringof, fun.length));
static if (args.length)
alias State = staticMap!(Unqual, Args);
else
alias State = staticMap!(ReduceSeedType!(ElementType!R), binfuns);
foreach (i, f; binfuns)
{
static assert(!__traits(compiles, f(args[i], e)) || __traits(compiles,
{ args[i] = f(args[i], e); }()),
algoFormat("Incompatible function/seed/element: %s/%s/%s",
fullyQualifiedName!f, Args[i].stringof, E.stringof));
}
static struct Result
{
private:
R source;
State state;
this(R range, ref Args args)
{
source = range;
if (source.empty)
return;
foreach (i, f; binfuns)
{
static if (args.length)
state[i] = f(args[i], source.front);
else
state[i] = source.front;
}
}
public:
@property bool empty()
{
return source.empty;
}
@property auto front()
{
assert(!empty, "Attempting to fetch the front of an empty cumulativeFold.");
static if (fun.length > 1)
{
import std.typecons : tuple;
return tuple(state);
}
else
{
return state[0];
}
}
void popFront()
{
assert(!empty, "Attempting to popFront an empty cumulativeFold.");
source.popFront;
if (source.empty)
return;
foreach (i, f; binfuns)
state[i] = f(state[i], source.front);
}
static if (isForwardRange!R)
{
@property auto save()
{
auto result = this;
result.source = source.save;
return result;
}
}
static if (hasLength!R)
{
@property size_t length()
{
return source.length;
}
}
}
return Result(range, args);
}
}
}
// minElement/maxElement was added in D 2.072.0
static if (__VERSION__ < 2072) {
auto minElement(alias map, Range)(Range r)
if (isInputRange!Range && !isInfinite!Range)
{
alias mapFun = unaryFun!map;
auto element = r.front;
auto minimum = mapFun(element);
r.popFront;
foreach(a; r) {
auto b = mapFun(a);
if (b < minimum) {
element = a;
minimum = b;
}
}
return element;
}
auto maxElement(alias map, Range)(Range r)
if (isInputRange!Range && !isInfinite!Range)
{
alias mapFun = unaryFun!map;
auto element = r.front;
auto maximum = mapFun(element);
r.popFront;
foreach(a; r) {
auto b = mapFun(a);
if (b > maximum) {
element = a;
maximum = b;
}
}
return element;
}
}
Submission Info
Judge Result
Set Name |
Sample |
All |
Score / Max Score |
0 / 0 |
900 / 900 |
Status |
|
|
Set Name |
Test Cases |
Sample |
sample_01.txt, sample_02.txt, sample_03.txt |
All |
sample_01.txt, sample_02.txt, sample_03.txt, subtask_1_alladd_01.txt, subtask_1_alladd_02.txt, subtask_1_alladd_03.txt, subtask_1_alladd_04.txt, subtask_1_allsub_01.txt, subtask_1_allsub_02.txt, subtask_1_allsub_03.txt, subtask_1_allsub_04.txt, subtask_1_cont_01.txt, subtask_1_cont_02.txt, subtask_1_cont_03.txt, subtask_1_cont_04.txt, subtask_1_killer_01.txt, subtask_1_killer_02.txt, subtask_1_killer_03.txt, subtask_1_killer_04.txt, subtask_1_max_01.txt, subtask_1_max_02.txt, subtask_1_max_03.txt, subtask_1_max_04.txt, subtask_1_min_01.txt, subtask_1_min_02.txt, subtask_1_rand_01.txt, subtask_1_rand_02.txt, subtask_1_rand_03.txt, subtask_1_rand_04.txt |
Case Name |
Status |
Exec Time |
Memory |
sample_01.txt |
AC |
1 ms |
256 KB |
sample_02.txt |
AC |
1 ms |
256 KB |
sample_03.txt |
AC |
1 ms |
256 KB |
subtask_1_alladd_01.txt |
AC |
87 ms |
46448 KB |
subtask_1_alladd_02.txt |
AC |
86 ms |
45296 KB |
subtask_1_alladd_03.txt |
AC |
87 ms |
46064 KB |
subtask_1_alladd_04.txt |
AC |
87 ms |
46832 KB |
subtask_1_allsub_01.txt |
AC |
167 ms |
62448 KB |
subtask_1_allsub_02.txt |
AC |
167 ms |
61040 KB |
subtask_1_allsub_03.txt |
AC |
167 ms |
63344 KB |
subtask_1_allsub_04.txt |
AC |
166 ms |
61296 KB |
subtask_1_cont_01.txt |
AC |
97 ms |
36616 KB |
subtask_1_cont_02.txt |
AC |
77 ms |
33568 KB |
subtask_1_cont_03.txt |
AC |
61 ms |
20460 KB |
subtask_1_cont_04.txt |
AC |
14 ms |
4732 KB |
subtask_1_killer_01.txt |
AC |
165 ms |
58688 KB |
subtask_1_killer_02.txt |
AC |
117 ms |
43656 KB |
subtask_1_killer_03.txt |
AC |
170 ms |
60832 KB |
subtask_1_killer_04.txt |
AC |
119 ms |
41092 KB |
subtask_1_max_01.txt |
AC |
178 ms |
61808 KB |
subtask_1_max_02.txt |
AC |
177 ms |
60656 KB |
subtask_1_max_03.txt |
AC |
178 ms |
60656 KB |
subtask_1_max_04.txt |
AC |
179 ms |
63984 KB |
subtask_1_min_01.txt |
AC |
1 ms |
256 KB |
subtask_1_min_02.txt |
AC |
1 ms |
256 KB |
subtask_1_rand_01.txt |
AC |
111 ms |
41404 KB |
subtask_1_rand_02.txt |
AC |
130 ms |
44984 KB |
subtask_1_rand_03.txt |
AC |
17 ms |
7164 KB |
subtask_1_rand_04.txt |
AC |
55 ms |
17568 KB |