Submission #66791
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 | #include <iostream> #include <vector> #include <numeric> #include <map> 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; } } } map< int , int > query( int n){ map< int , int > res; while (n > 1){ res[min_factor[n]]++; n /= min_factor[n]; } return (res); } }; long long pow ( int a, int b){ long long ret = 1; for ( int i = 0; i < b; ++i){ ret *= a; } return (ret); } 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); long long res = 1; for (auto [p, k] : pf.query(v)){ res *= ( pow (p, k + 1) - 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 15:12:07 |
言語 | C++17 |
状態 | Accepted |
得点 | 5 |
ソースコード長 | 4319 Byte |
最大実行時間 | 147 ms |
最大メモリ使用量 | 18064 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 | 74 ms | 7388 KB |
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in02.txt | AC | 52 ms | 7132 KB |
1
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in03.txt | AC | 108 ms | 7256 KB |
1
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in04.txt | AC | 71 ms | 7360 KB |
1
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in05.txt | AC | 100 ms | 7608 KB |
1
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in06.txt | AC | 58 ms | 7560 KB |
1
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in07.txt | AC | 98 ms | 8004 KB |
1
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in08.txt | AC | 88 ms | 5704 KB |
1
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in09.txt | AC | 91 ms | 6864 KB |
1
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in10.txt | AC | 61 ms | 8036 KB |
1
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in11.txt | AC | 44 ms | 6360 KB |
1
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in12.txt | AC | 58 ms | 6228 KB |
1
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in13.txt | AC | 100 ms | 7288 KB |
1
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in14.txt | AC | 57 ms | 7648 KB |
1
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in15.txt | AC | 56 ms | 8944 KB |
1
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in16.txt | AC | 47 ms | 7732 KB |
1
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in17.txt | AC | 74 ms | 6648 KB |
1
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in18.txt | AC | 52 ms | 6952 KB |
1
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in19.txt | AC | 114 ms | 10112 KB |
1
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in20.txt | AC | 123 ms | 10612 KB |
1
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in21.txt | AC | 147 ms | 12260 KB |
1
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in22.txt | AC | 108 ms | 13020 KB |
1
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in23.txt | AC | 123 ms | 13776 KB |
1
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in24.txt | AC | 100 ms | 14532 KB |
1
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in25.txt | AC | 95 ms | 15292 KB |
1
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in26.txt | AC | 99 ms | 16048 KB |
1
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in27.txt | AC | 105 ms | 16672 KB |
1
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in28.txt | AC | 110 ms | 18064 KB |
1
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sample.txt | AC | 21 ms | 15236 KB |
1
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