Submission #66788
ソースコード
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 | #include <iostream> #include <vector> #include <numeric> using namespace std; template < typename Monoid, typename F > struct SegmentTree { int sz; vector< Monoid > seg; const F f; const Monoid M1; SegmentTree( int n, const F f, const Monoid &M1) : f(f), M1(M1) { sz = 1; while (sz < n) sz <<= 1; seg.assign(2 * sz, M1); } void set( int k, const Monoid &x) { seg[k + sz] = x; } void build() { for ( int k = sz - 1; k > 0; k--) { seg[k] = f(seg[2 * k + 0], seg[2 * k + 1]); } } void update( int k, const Monoid &x) { k += sz; seg[k] = x; while (k >>= 1) { seg[k] = f(seg[2 * k + 0], seg[2 * k + 1]); } } Monoid query( int a, int b) { Monoid L = M1, R = M1; for (a += sz, b += sz; a < b; a >>= 1, b >>= 1) { if (a & 1) L = f(L, seg[a++]); if (b & 1) R = f(seg[--b], R); } return f(L, R); } Monoid operator[]( const int &k) const { return seg[k + sz]; } template < typename C > int find_subtree( int a, const C &check, Monoid &M, bool type) { while (a < sz) { Monoid nxt = type ? f(seg[2 * a + type], M) : f(M, seg[2 * a + type]); if (check(nxt)) a = 2 * a + type; else M = nxt, a = 2 * a + 1 - type; } return a - sz; } template < typename C > int find_first( int a, const C &check) { Monoid L = M1; if (a <= 0) { if (check(f(L, seg[1]))) return find_subtree(1, check, L, false ); return -1; } int b = sz; for (a += sz, b += sz; a < b; a >>= 1, b >>= 1) { if (a & 1) { Monoid nxt = f(L, seg[a]); if (check(nxt)) return find_subtree(a, check, L, false ); L = nxt; ++a; } } return -1; } template < typename C > int find_last( int b, const C &check) { Monoid R = M1; if (b >= sz) { if (check(f(seg[1], R))) return find_subtree(1, check, R, true ); return -1; } int a = sz; for (b += sz; a < b; a >>= 1, b >>= 1) { if (b & 1) { Monoid nxt = f(seg[--b], R); if (check(nxt)) return find_subtree(b, check, R, true ); R = nxt; } } return -1; } }; template < typename Monoid, typename F > SegmentTree< Monoid, F > get_segment_tree( int N, const F& f, const Monoid& M1) { return {N, f, M1}; } struct FastPrimeFactorization{ vector< int > min_factor; FastPrimeFactorization( int n) : min_factor(n + 1){ iota(min_factor.begin(), min_factor.end(), 0); for ( int i = 2; i * i <= n; ++i){ if (min_factor[i] < i) continue ; for ( int j = i * i; j <= n; j += i){ if (min_factor[j] == j) min_factor[j] = i; } } } vector< int > query( int n){ vector< int > res; while (n > 1){ res.emplace_back(min_factor[n]); n /= min_factor[n]; } return (res); } }; int main(){ cin.tie(nullptr); ios_base::sync_with_stdio( false ); int n, q; cin >> n >> q; vector< int > a(n); for ( int i = 0; i < n; ++i){ cin >> a[i]; } FastPrimeFactorization pf(1e6); auto seg = get_segment_tree(n, []( int a, int b){ return (gcd(a, b)); }, 0); for ( int i = 0; i < n; ++i){ seg.set(i, a[i]); } seg.build(); for ( int i = 0; i < q; ++i){ int t, x, y; cin >> t >> x >> y; --x; if (t == 1){ seg.update(x, y); } else { int v = seg.query(x, y); vector<pair< int , int > > cnt; for (auto p : pf.query(v)){ if (cnt.empty() || cnt.back().first != p){ cnt.emplace_back(p, 1); } else { cnt.back().second++; } } long long res = 1; for (auto [p, k] : cnt){ long long pow = 1; for ( int j = 0; j <= k; ++j){ pow *= p; } res *= ( pow - 1) / (p - 1); } cout << res << '\n' ; } } return (0); } |
ステータス
項目 | データ |
---|---|
問題 | 1516 - 『公約数』総和企画 |
ユーザー名 | ei1903 |
投稿日時 | 2021-06-01 14:43:03 |
言語 | C++17 |
状態 | Accepted |
得点 | 5 |
ソースコード長 | 4577 Byte |
最大実行時間 | 263 ms |
最大メモリ使用量 | 97424 KB |
セット
セット | 得点 | Cases | |
---|---|---|---|
1 | ALL | 5 / 5 | * |
テストケース
ファイル名 | 状態 | 実行時間 | メモリ使用量 | # |
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in01.txt | AC | 86 ms | 9692 KB |
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in02.txt | AC | 98 ms | 10712 KB |
1
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in03.txt | AC | 112 ms | 14292 KB |
1
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in04.txt | AC | 79 ms | 16700 KB |
1
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in05.txt | AC | 126 ms | 20924 KB |
1
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in06.txt | AC | 64 ms | 22672 KB |
1
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in07.txt | AC | 115 ms | 26440 KB |
1
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in08.txt | AC | 104 ms | 26828 KB |
1
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in09.txt | AC | 93 ms | 30164 KB |
1
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in10.txt | AC | 70 ms | 33124 KB |
1
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in11.txt | AC | 45 ms | 31956 KB |
1
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in12.txt | AC | 62 ms | 33096 KB |
1
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in13.txt | AC | 94 ms | 36844 KB |
1
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in14.txt | AC | 91 ms | 38868 KB |
1
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in15.txt | AC | 54 ms | 41448 KB |
1
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in16.txt | AC | 48 ms | 41256 KB |
1
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in17.txt | AC | 84 ms | 41708 KB |
1
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in18.txt | AC | 58 ms | 42916 KB |
1
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in19.txt | AC | 139 ms | 50172 KB |
1
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in20.txt | AC | 263 ms | 54508 KB |
1
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in21.txt | AC | 164 ms | 60644 KB |
1
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in22.txt | AC | 139 ms | 66136 KB |
1
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in23.txt | AC | 124 ms | 71244 KB |
1
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in24.txt | AC | 125 ms | 76356 KB |
1
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in25.txt | AC | 111 ms | 81588 KB |
1
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in26.txt | AC | 132 ms | 86692 KB |
1
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in27.txt | AC | 124 ms | 91800 KB |
1
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in28.txt | AC | 124 ms | 97424 KB |
1
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sample.txt | AC | 28 ms | 94596 KB |
1
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