結果
| 問題 |
No.1471 Sort Queries
|
| コンテスト | |
| ユーザー |
daut-dlang
|
| 提出日時 | 2021-04-09 21:48:47 |
| 言語 | D (dmd 2.109.1) |
| 結果 |
AC
|
| 実行時間 | 37 ms / 2,000 ms |
| コード長 | 3,377 bytes |
| コンパイル時間 | 781 ms |
| コンパイル使用メモリ | 119,752 KB |
| 実行使用メモリ | 23,320 KB |
| 最終ジャッジ日時 | 2024-06-22 11:11:18 |
| 合計ジャッジ時間 | 2,751 ms |
|
ジャッジサーバーID (参考情報) |
judge1 / judge4 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 37 |
ソースコード
import std.stdio, std.conv, std.functional, std.string;
import std.algorithm, std.array, std.container, std.range, std.typecons;
import std.bigint, std.numeric, std.math, std.random;
import core.bitop;
string FMT_F = "%.10f";
static File _f;
void file_io(string fn) { _f = File(fn, "r"); }
static string[] s_rd;
T _RD(T = long)() { while(!s_rd.length) s_rd = readln.chomp.split; string res = s_rd[0]; s_rd.popFront; return res.to!T; }
T _RD(T = long)(File f) { while(!s_rd.length) s_rd = f.readln.chomp.split; string res = s_rd[0]; s_rd.popFront; return res.to!T; }
T[] _RDA(T = long)(T fix = 0) { auto r = readln.chomp.split.to!(T[]); r[] += fix; return r; }
T[] _RDA(T = long)(File f, T fix = 0) { auto r = f.readln.chomp.split.to!(T[]); r[] += fix; return r; }
T RD(T = long)() { if (_f.isOpen) return _RD!T(_f); else return _RD!T; }
T[] RDA(T = long)(T fix = 0) { if (_f.isOpen) return _RDA!T(_f, fix); else return _RDA!T(fix); }
size_t[] MAKE_IDX(alias less = "a < b", Range)(Range range) { auto idx = new size_t[](range.length); makeIndex!(less)(range, idx); return idx;}
size_t MIN_POS(alias less = "a < b", Range)(Range range) { auto r = minPos!(less)(range); return range.length - r.length; }
void chmin(T)(ref T x, T y) { x = min(x, y); } void chmax(T)(ref T x, T y) { x = max(x, y); }
bool inside(T)(T x, T b, T e) { return x >= b && x < e; }
T lcm(T)(T x, T y) { return x * (y / gcd(x, y)); }
long mod = 10^^9 + 7;
//long mod = 998_244_353;
//long mod = 1_000_003;
void moda(ref long x, long y) { x = (x + y) % mod; }
void mods(ref long x, long y) { x = ((x + mod) - (y % mod)) % mod; }
void modm(ref long x, long y) { x = (x * y) % mod; }
void modpow(ref long x, long y) { if (!y) { x = 1; return; } auto t = x; x.modpow(y>>1); x.modm(x); if (y&1) x.modm(t); }
void modd(ref long x, long y) { y.modpow(mod - 2); x.modm(y); }
struct SegTree(T)
{
T delegate(const(T), const(T)) f;
T[] data;
T init;
this(T[] _data, T delegate(const(T), const(T)) _f, T _init)
{
f = _f; init = _init;
size_t n = 1; while (n < _data.length) n *= 2; data.length = n*2-1;
foreach (i; 0.._data.length) data[i+n-1] = _data[i];
foreach (i; _data.length..n) data[i+n-1] = _init;
foreach_reverse (i; 0..n-1) data[i] = f(data[i*2+1], data[i*2+2]);
}
T query(size_t l, size_t r)
{
size_t n = (data.length+1) / 2; l += n-1; r += n-1; T res = init;
while (l < r)
{
if ((l & 1) == 0) res = f(res, data[l]);
if ((r & 1) == 0) res = f(res, data[r-1]);
l = l/2; r = (r-1)/2;
}
return res;
}
void update(size_t i, T v)
{
i += (data.length+1) / 2 - 1; data[i] = v;
while (i != 0) { i = (i-1)/2; data[i] = f(data[i*2+1], data[i*2+2]); }
}
}
void main()
{
auto N = RD;
auto Q = RD;
auto S = RD!string;
auto data = new long[][](N, 26);
foreach (i; 0..N)
{
auto num = S[i]-'a';
++data[i][num];
}
auto init = new long[](26);
long[] f(in long[] a, in long[] b)
{
auto c = a.dup;
c[] += b[];
return c;
}
auto st = new SegTree!(long[])(data, &f, init);
auto ans = new char[](Q);
foreach (i; 0..Q)
{
auto L = RD-1;
auto R = RD;
auto X = RD;
auto arr = st.query(L, R);
long cnt;
foreach (j; 0..arr.length)
{
cnt += arr[j];
if (cnt >= X)
{
ans[i] = cast(char)(j+'a');
break;
}
}
}
foreach (e; ans)
writeln(e);
debug readln;
}
daut-dlang