結果
問題 | No.1929 Exponential Sequence |
ユーザー | allegrogiken |
提出日時 | 2022-05-07 09:20:37 |
言語 | D (dmd 2.106.1) |
結果 |
TLE
|
実行時間 | - |
コード長 | 5,024 bytes |
コンパイル時間 | 1,063 ms |
コンパイル使用メモリ | 133,328 KB |
実行使用メモリ | 20,312 KB |
最終ジャッジ日時 | 2024-06-22 15:09:04 |
合計ジャッジ時間 | 4,712 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge1 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 2 ms
13,756 KB |
testcase_01 | AC | 1 ms
6,944 KB |
testcase_02 | AC | 2 ms
6,944 KB |
testcase_03 | TLE | - |
testcase_04 | -- | - |
testcase_05 | -- | - |
testcase_06 | -- | - |
testcase_07 | -- | - |
testcase_08 | -- | - |
testcase_09 | -- | - |
testcase_10 | -- | - |
testcase_11 | -- | - |
testcase_12 | -- | - |
testcase_13 | -- | - |
testcase_14 | -- | - |
testcase_15 | -- | - |
testcase_16 | -- | - |
testcase_17 | -- | - |
testcase_18 | -- | - |
testcase_19 | -- | - |
testcase_20 | -- | - |
testcase_21 | -- | - |
testcase_22 | -- | - |
testcase_23 | -- | - |
testcase_24 | -- | - |
testcase_25 | -- | - |
testcase_26 | -- | - |
testcase_27 | -- | - |
ソースコード
void main() { runSolver(); } void problem() { auto N = scan!int; auto S = scan!long; auto A = scan!long(N); auto solve() { long[long] dp, pre; const half = (N + 1) / 2; dp.clear; dp[0] = 1; foreach(a; A[0..half]) { swap(dp, pre); dp.clear; foreach(ps, pv; pre) { for(long k = a; ps + k <= S; k *= a) { dp[ps + k] += pv; } } } auto halfs = dp.dup; dp.clear; dp[0] = 1; foreach(a; A[half..$]) { swap(dp, pre); dp.clear; foreach(ps, pv; pre) { for(long k = a; ps + k <= S; k *= a) { dp[ps + k] += pv; } } } if (dp.empty) { dp[0] = 1; } auto k1 = halfs.keys.map!(k => [k, halfs[k]]).array.sort!"a[0] < b[0]"; long ans; foreach(s, v; dp) { foreach(hs; k1.lowerBound([S - s + 1, 0])) { ans += v * hs[1]; } } return ans; } outputForAtCoder(&solve); } // ---------------------------------------------- import std.stdio, std.conv, std.array, std.string, std.algorithm, std.container, std.range, core.stdc.stdlib, std.math, std.typecons, std.numeric, std.traits, std.functional, std.bigint, std.datetime.stopwatch, core.time, core.bitop; T[][] combinations(T)(T[] s, in long m) { if (!m) return [[]]; if (s.empty) return []; return s[1 .. $].combinations(m - 1).map!(x => s[0] ~ x).array ~ s[1 .. $].combinations(m); } string scan(){ static string[] ss; while(!ss.length) ss = readln.chomp.split; string res = ss[0]; ss.popFront; return res; } T scan(T)(){ return scan.to!T; } T[] scan(T)(long n){ return n.iota.map!(i => scan!T()).array; } void deb(T ...)(T t){ debug writeln(t); } alias Point = Tuple!(long, "x", long, "y"); Point invert(Point p) { return Point(p.y, p.x); } long[] divisors(long n) { long[] ret; for (long i = 1; i * i <= n; i++) { if (n % i == 0) { ret ~= i; if (i * i != n) ret ~= n / i; } } return ret.sort.array; } bool chmin(T)(ref T a, T b) { if (b < a) { a = b; return true; } else return false; } bool chmax(T)(ref T a, T b) { if (b > a) { a = b; return true; } else return false; } string charSort(alias S = "a < b")(string s) { return (cast(char[])((cast(byte[])s).sort!S.array)).to!string; } ulong comb(ulong a, ulong b) { if (b == 0) {return 1;}else{return comb(a - 1, b - 1) * a / b;}} string toAnswerString(R)(R r) { return r.map!"a.to!string".joiner(" ").array.to!string; } struct ModInt(uint MD) if (MD < int.max) {ulong v;this(string v) {this(v.to!long);}this(int v) {this(long(v));}this(long v) {this.v = (v%MD+MD)%MD;}void opAssign(long t) {v = (t%MD+MD)%MD;}static auto normS(ulong x) {return (x<MD)?x:x-MD;}static auto make(ulong x) {ModInt m; m.v = x; return m;}auto opBinary(string op:"+")(ModInt r) const {return make(normS(v+r.v));}auto opBinary(string op:"-")(ModInt r) const {return make(normS(v+MD-r.v));}auto opBinary(string op:"*")(ModInt r) const {return make((ulong(v)*r.v%MD).to!ulong);}auto opBinary(string op:"^^", T)(T r) const {long x=v;long y=1;while(r){if(r%2==1)y=(y*x)%MD;x=x^^2%MD;r/=2;} return make(y);}auto opBinary(string op:"/")(ModInt r) const {return this*memoize!inv(r);}static ModInt inv(ModInt x) {return x^^(MD-2);}string toString() const {return v.to!string;}auto opOpAssign(string op)(ModInt r) {return mixin ("this=this"~op~"r");}} alias MInt1 = ModInt!(10^^9 + 7); alias MInt9 = ModInt!(998_244_353); void outputForAtCoder(T)(T delegate() fn) { static if (is(T == float) || is(T == double) || is(T == real)) "%.16f".writefln(fn()); else static if (is(T == void)) fn(); else static if (is(T == string)) fn().writeln; else static if (isInputRange!T) { static if (!is(string == ElementType!T) && isInputRange!(ElementType!T)) foreach(r; fn()) r.toAnswerString.writeln; else foreach(r; fn()) r.writeln; } else fn().writeln; } void runSolver() { enum BORDER = "=================================="; debug { BORDER.writeln; while(!stdin.eof) { "<<< Process time: %s >>>".writefln(benchmark!problem(1)); BORDER.writeln; } } else problem(); } enum YESNO = [true: "Yes", false: "No"]; // ----------------------------------------------- struct FermetCalculator(uint MD) { long[] factrial; // 階乗 long[] inverse; // 逆元 this(long size) { factrial = new long[size + 1]; inverse = new long[size + 1]; factrial[0] = 1; inverse[0] = 1; for (long i = 1; i <= size; i++) { factrial[i] = (factrial[i - 1] * i) % MD; // 階乗を求める inverse[i] = pow(factrial[i], MD - 2) % MD; // フェルマーの小定理で逆元を求める } } long combine(long n, long k) { if (n < k) return 1; return factrial[n] * inverse[k] % MD * inverse[n - k] % MD; } long pow(long x, long n) { //x^n 計算量O(logn) long ans = 1; while (n > 0) { if ((n & 1) == 1) { ans = ans * x % MD; } x = x * x % MD; //一周する度にx, x^2, x^4, x^8となる n >>= 1; //桁をずらす n = n >> 1 } return ans; } }