| 10997 | 2024-06-01 16:46:25 | szil | Geometric Mean | cpp17 | Accepted 100/100 | 527ms | 30352 KiB |
#include <bits/stdc++.h>
#include <iterator>
using ll = long long;
using namespace std;
const int MAXN = 1'000'001;
const ll INF = 1e12 + 1;
int szita[MAXN];
void solve() {
int n;
cin >> n;
vector<ll> v(n + 1);
vector<vector<int> > p(n + 1);
unordered_map<ll, int> m;
for(int i = 1; i <= n; i++)
{
cin >> v[i];
int x = v[i];
while(x != 1)
{
p[i].push_back(szita[x]);
x /= szita[x];
}
}
ll ans = 0;
vector<vector<ll> > ins(n + 2);
for(int i = 1; i <= n; i++)
{
for(auto x : ins[i]) m[x]++;
for(int j = i + 1; j <= n; j++) {
vector<int> pt;
merge(p[i].begin(), p[i].end(), p[j].begin(), p[j].end(), back_inserter(pt));
pt.push_back(1);
ll w = 1;
ll la = 1, db = 0;
ll mul = v[i] * v[j];
for(auto x : pt)
{
if(x == la)
{
db++;
}
if(x != la)
{
ll m = 1;
while(db >= 4)
{
for(int i = 0; i < 4; i++) mul /= la;
db -= 4;
}
int z = (4 - db) % 4;
for(int i = 0; i < z; i++)
{
if(w == -1) continue;
w *= la;
if(w > INF) w = -1;
}
db = 1;
}
la = x;
}
ans += m[w];
ins[j + 1].push_back(mul);
}
}
cout << ans << "\n";
}
int main() {
ios_base::sync_with_stdio(0); cin.tie(0);
for (int i = 2; i < MAXN; i++) {
if (!szita[i]) {
szita[i] = i;
for (int j = 2*i; j < MAXN; j += i) {
if (!szita[j]) szita[j] = i;
}
}
}
int t = 1;
// cin >> t;
while (t--) {
solve();
}
return 0;
}| Subtask | Sum | Test | Verdict | Time | Memory | ||
|---|---|---|---|---|---|---|---|
| subtask1 | 0/0 | ||||||
| 1 | Accepted | 17ms | 4324 KiB | ||||
| 2 | Accepted | 14ms | 4324 KiB | ||||
| 3 | Accepted | 17ms | 4324 KiB | ||||
| subtask2 | 10/10 | ||||||
| 4 | Accepted | 17ms | 4240 KiB | ||||
| 5 | Accepted | 17ms | 4324 KiB | ||||
| 6 | Accepted | 16ms | 4328 KiB | ||||
| 7 | Accepted | 17ms | 4452 KiB | ||||
| 8 | Accepted | 17ms | 4324 KiB | ||||
| 9 | Accepted | 17ms | 4324 KiB | ||||
| 10 | Accepted | 17ms | 4196 KiB | ||||
| 11 | Accepted | 17ms | 4452 KiB | ||||
| 12 | Accepted | 16ms | 4196 KiB | ||||
| 13 | Accepted | 16ms | 4256 KiB | ||||
| 14 | Accepted | 14ms | 4488 KiB | ||||
| 15 | Accepted | 16ms | 4456 KiB | ||||
| 16 | Accepted | 16ms | 4480 KiB | ||||
| 17 | Accepted | 16ms | 4452 KiB | ||||
| 18 | Accepted | 16ms | 4584 KiB | ||||
| subtask3 | 10/10 | ||||||
| 19 | Accepted | 17ms | 4240 KiB | ||||
| 20 | Accepted | 17ms | 4324 KiB | ||||
| 21 | Accepted | 16ms | 4328 KiB | ||||
| 22 | Accepted | 17ms | 4452 KiB | ||||
| 23 | Accepted | 17ms | 4324 KiB | ||||
| 24 | Accepted | 17ms | 4324 KiB | ||||
| 25 | Accepted | 17ms | 4196 KiB | ||||
| 26 | Accepted | 17ms | 4452 KiB | ||||
| 27 | Accepted | 16ms | 4196 KiB | ||||
| 28 | Accepted | 16ms | 4256 KiB | ||||
| 29 | Accepted | 14ms | 4488 KiB | ||||
| 30 | Accepted | 16ms | 4456 KiB | ||||
| 31 | Accepted | 16ms | 4480 KiB | ||||
| 32 | Accepted | 16ms | 4452 KiB | ||||
| 33 | Accepted | 16ms | 4584 KiB | ||||
| 34 | Accepted | 16ms | 4388 KiB | ||||
| 35 | Accepted | 16ms | 4228 KiB | ||||
| 36 | Accepted | 17ms | 4472 KiB | ||||
| 37 | Accepted | 17ms | 4324 KiB | ||||
| 38 | Accepted | 14ms | 4252 KiB | ||||
| 39 | Accepted | 17ms | 4252 KiB | ||||
| 40 | Accepted | 17ms | 4452 KiB | ||||
| 41 | Accepted | 16ms | 4344 KiB | ||||
| 42 | Accepted | 17ms | 4252 KiB | ||||
| 43 | Accepted | 16ms | 4344 KiB | ||||
| 44 | Accepted | 16ms | 4324 KiB | ||||
| 45 | Accepted | 17ms | 4472 KiB | ||||
| subtask4 | 10/10 | ||||||
| 46 | Accepted | 18ms | 4284 KiB | ||||
| 47 | Accepted | 98ms | 5580 KiB | ||||
| 48 | Accepted | 208ms | 7680 KiB | ||||
| 49 | Accepted | 337ms | 9764 KiB | ||||
| 50 | Accepted | 342ms | 9828 KiB | ||||
| 51 | Accepted | 347ms | 9700 KiB | ||||
| 52 | Accepted | 351ms | 9828 KiB | ||||
| 53 | Accepted | 361ms | 9828 KiB | ||||
| 54 | Accepted | 342ms | 9700 KiB | ||||
| subtask5 | 25/25 | ||||||
| 55 | Accepted | 17ms | 4240 KiB | ||||
| 56 | Accepted | 17ms | 4324 KiB | ||||
| 57 | Accepted | 16ms | 4328 KiB | ||||
| 58 | Accepted | 17ms | 4452 KiB | ||||
| 59 | Accepted | 17ms | 4324 KiB | ||||
| 60 | Accepted | 17ms | 4324 KiB | ||||
| 61 | Accepted | 17ms | 4196 KiB | ||||
| 62 | Accepted | 17ms | 4452 KiB | ||||
| 63 | Accepted | 16ms | 4196 KiB | ||||
| 64 | Accepted | 16ms | 4256 KiB | ||||
| 65 | Accepted | 14ms | 4488 KiB | ||||
| 66 | Accepted | 16ms | 4456 KiB | ||||
| 67 | Accepted | 16ms | 4480 KiB | ||||
| 68 | Accepted | 16ms | 4452 KiB | ||||
| 69 | Accepted | 16ms | 4584 KiB | ||||
| 70 | Accepted | 16ms | 4388 KiB | ||||
| 71 | Accepted | 16ms | 4228 KiB | ||||
| 72 | Accepted | 17ms | 4472 KiB | ||||
| 73 | Accepted | 17ms | 4324 KiB | ||||
| 74 | Accepted | 14ms | 4252 KiB | ||||
| 75 | Accepted | 17ms | 4252 KiB | ||||
| 76 | Accepted | 17ms | 4452 KiB | ||||
| 77 | Accepted | 16ms | 4344 KiB | ||||
| 78 | Accepted | 17ms | 4252 KiB | ||||
| 79 | Accepted | 16ms | 4344 KiB | ||||
| 80 | Accepted | 16ms | 4324 KiB | ||||
| 81 | Accepted | 17ms | 4472 KiB | ||||
| 82 | Accepted | 25ms | 5220 KiB | ||||
| 83 | Accepted | 23ms | 4744 KiB | ||||
| 84 | Accepted | 30ms | 4624 KiB | ||||
| 85 | Accepted | 35ms | 4660 KiB | ||||
| 86 | Accepted | 23ms | 4580 KiB | ||||
| 87 | Accepted | 28ms | 4532 KiB | ||||
| 88 | Accepted | 28ms | 4580 KiB | ||||
| 89 | Accepted | 18ms | 4580 KiB | ||||
| 90 | Accepted | 32ms | 4560 KiB | ||||
| 91 | Accepted | 32ms | 5268 KiB | ||||
| 92 | Accepted | 27ms | 5224 KiB | ||||
| 93 | Accepted | 27ms | 5260 KiB | ||||
| 94 | Accepted | 27ms | 5420 KiB | ||||
| 95 | Accepted | 27ms | 5216 KiB | ||||
| 96 | Accepted | 26ms | 5220 KiB | ||||
| subtask6 | 45/45 | ||||||
| 97 | Accepted | 17ms | 4240 KiB | ||||
| 98 | Accepted | 17ms | 4324 KiB | ||||
| 99 | Accepted | 16ms | 4328 KiB | ||||
| 100 | Accepted | 17ms | 4452 KiB | ||||
| 101 | Accepted | 17ms | 4324 KiB | ||||
| 102 | Accepted | 17ms | 4324 KiB | ||||
| 103 | Accepted | 17ms | 4196 KiB | ||||
| 104 | Accepted | 17ms | 4452 KiB | ||||
| 105 | Accepted | 16ms | 4196 KiB | ||||
| 106 | Accepted | 16ms | 4256 KiB | ||||
| 107 | Accepted | 14ms | 4488 KiB | ||||
| 108 | Accepted | 16ms | 4456 KiB | ||||
| 109 | Accepted | 16ms | 4480 KiB | ||||
| 110 | Accepted | 16ms | 4452 KiB | ||||
| 111 | Accepted | 16ms | 4584 KiB | ||||
| 112 | Accepted | 16ms | 4388 KiB | ||||
| 113 | Accepted | 16ms | 4228 KiB | ||||
| 114 | Accepted | 17ms | 4472 KiB | ||||
| 115 | Accepted | 17ms | 4324 KiB | ||||
| 116 | Accepted | 14ms | 4252 KiB | ||||
| 117 | Accepted | 17ms | 4252 KiB | ||||
| 118 | Accepted | 17ms | 4452 KiB | ||||
| 119 | Accepted | 16ms | 4344 KiB | ||||
| 120 | Accepted | 17ms | 4252 KiB | ||||
| 121 | Accepted | 16ms | 4344 KiB | ||||
| 122 | Accepted | 16ms | 4324 KiB | ||||
| 123 | Accepted | 17ms | 4472 KiB | ||||
| 124 | Accepted | 18ms | 4284 KiB | ||||
| 125 | Accepted | 98ms | 5580 KiB | ||||
| 126 | Accepted | 208ms | 7680 KiB | ||||
| 127 | Accepted | 337ms | 9764 KiB | ||||
| 128 | Accepted | 342ms | 9828 KiB | ||||
| 129 | Accepted | 347ms | 9700 KiB | ||||
| 130 | Accepted | 351ms | 9828 KiB | ||||
| 131 | Accepted | 361ms | 9828 KiB | ||||
| 132 | Accepted | 342ms | 9700 KiB | ||||
| 133 | Accepted | 25ms | 5220 KiB | ||||
| 134 | Accepted | 23ms | 4744 KiB | ||||
| 135 | Accepted | 30ms | 4624 KiB | ||||
| 136 | Accepted | 35ms | 4660 KiB | ||||
| 137 | Accepted | 23ms | 4580 KiB | ||||
| 138 | Accepted | 28ms | 4532 KiB | ||||
| 139 | Accepted | 28ms | 4580 KiB | ||||
| 140 | Accepted | 18ms | 4580 KiB | ||||
| 141 | Accepted | 32ms | 4560 KiB | ||||
| 142 | Accepted | 32ms | 5268 KiB | ||||
| 143 | Accepted | 27ms | 5224 KiB | ||||
| 144 | Accepted | 27ms | 5260 KiB | ||||
| 145 | Accepted | 27ms | 5420 KiB | ||||
| 146 | Accepted | 27ms | 5216 KiB | ||||
| 147 | Accepted | 26ms | 5220 KiB | ||||
| 148 | Accepted | 389ms | 30352 KiB | ||||
| 149 | Accepted | 172ms | 10128 KiB | ||||
| 150 | Accepted | 412ms | 9820 KiB | ||||
| 151 | Accepted | 527ms | 9828 KiB | ||||
| 152 | Accepted | 137ms | 9700 KiB | ||||
| 153 | Accepted | 347ms | 9744 KiB | ||||
| 154 | Accepted | 342ms | 9796 KiB | ||||
| 155 | Accepted | 104ms | 9672 KiB | ||||
| 156 | Accepted | 368ms | 9828 KiB | ||||
| 157 | Accepted | 361ms | 11328 KiB | ||||
| 158 | Accepted | 328ms | 22536 KiB | ||||
| 159 | Accepted | 386ms | 28984 KiB | ||||
| 160 | Accepted | 442ms | 30160 KiB | ||||
| 161 | Accepted | 393ms | 29104 KiB | ||||
| 162 | Accepted | 453ms | 29260 KiB | ||||
| 163 | Accepted | 305ms | 9828 KiB | ||||
| 164 | Accepted | 273ms | 21432 KiB | ||||