結果
問題 | No.619 CardShuffle |
ユーザー |
|
提出日時 | 2018-01-12 17:37:58 |
言語 | D (dmd 2.109.1) |
結果 |
AC
|
実行時間 | 1,272 ms / 3,000 ms |
コード長 | 3,512 bytes |
コンパイル時間 | 1,075 ms |
コンパイル使用メモリ | 119,936 KB |
実行使用メモリ | 83,968 KB |
最終ジャッジ日時 | 2024-06-12 23:32:49 |
合計ジャッジ時間 | 19,810 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge4 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 1 |
other | AC * 35 |
ソースコード
import std.stdio, std.array, std.string, std.conv, std.algorithm;import std.typecons, std.range, std.random, std.math, std.container;import std.numeric, std.bigint, core.bitop;immutable long MOD = 10^^9 + 7;void main() {auto N = readln.chomp.to!int;auto C = readln.split;auto A = iota(0, N, 2).map!(i => C[i].to!long).array;auto B = iota(1, N, 2).map!(i => C[i]).array;auto st = new SegmentTree(N/2+1, B.dup);foreach (i; 0..N/2+1) st.update(i, A[i]);auto Q = readln.chomp.to!int;while (Q--) {auto q = readln.split;auto a = q[1].to!int - 1;auto b = q[2].to!int - 1;auto parity = a % 2;a /= 2;b /= 2;if (q[0] == "?") {st.query(a, b).writeln;} else if (parity) {if (st.ops[a] == st.ops[b]) continue;swap(st.ops[a], st.ops[b]);st.update(a, A[a]);st.update(a+1, A[a+1]);st.update(b, A[b]);st.update(b+1, A[b+1]);} else {if (A[a] == A[b]) continue;swap(A[a], A[b]);st.update(a, A[a]);st.update(b, A[b]);}}}class SegmentTree {long[][] table;string[] ops;int size;this(int n, string[] ops) {assert(bsr(n) < 29);size = 1 << (bsr(n) + 2);table = new long[][](size);this.ops = ops;}long[] merge(int mid, long[] a1, long[] a2) {long[] ret;if (a1 == [] || a2 == []) {ret = a1 ~ a2;} else if (ops[mid] == "+") {long tmp = 0;foreach (x; a1[1..$]) (tmp += x) %= MOD;foreach (x; a2[0..$-1]) (tmp += x) %= MOD;ret = [];ret ~= a1.front;if (tmp > 0) ret ~= tmp;ret ~= a2.back;} else {long tmp = a1.back * a2.front % MOD;if (a1.length == 1 && a2.length == 1) {ret = [tmp];} else if (a1.length == 1) {ret = tmp ~ a2[1..$];} else if (a2.length == 1) {ret = a1[0..$-1] ~ tmp;} else {foreach (x; a1[1..$-1]) (tmp += x) %= MOD;foreach (x; a2[1..$-1]) (tmp += x) %= MOD;ret = [a1.front, tmp, a2.back];}}return ret;}void update(int pos, long num) {return update(pos, num, 0, 0, size/2-1);}void update(int pos, long num, int i, int left, int right) {if (left == right) {table[i] = [num];return;}auto mid = (left + right) / 2;if (pos <= mid)update(pos, num, i*2+1, left, mid);elseupdate(pos, num, i*2+2, mid+1, right);table[i] = merge(mid, table[i*2+1], table[i*2+2]);}long query(int pl, int pr) {auto X = query(pl, pr, 0, 0, size/2-1);long ret = 0;foreach (x; X) (ret += x) %= MOD;return ret;}long[] query(int pl, int pr, int i, int left, int right) {if (pl > right || pr < left) {return [];} else if (pl <= left && right <= pr) {return table[i];} else {auto a = query(pl, pr, i*2+1, left, (left+right)/2);auto b = query(pl, pr, i*2+2, (left+right)/2+1, right);auto x = merge((left + right) / 2, a, b);return x;}}}