#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
#include <unordered_map>
using namespace std;
vector<int> primeFactors(int n)
{
vector<int> result;
while (n % 2 == 0)
{
result.push_back(2);
n = n / 2;
}
for (int i = 3; i <= sqrt(n); i = i + 2)
{
while (n%i == 0)
{
result.push_back(i);
n = n / i;
}
}
if (n > 2)
result.push_back(n);
return result;
}
bool isOne(char s) {
return s == '1';
}
unordered_map<int, string> map;
string solve(int n)
{
if (n == 1)
return "1";
else if (n == 2)
return "1+1";
else if (n == 3)
return "1+1+1";
auto found = map.find(n);
if (found != map.end())
return found->second;
auto result = primeFactors(n);
if (result.size() == 1) {
const string output = "(" + solve(n - 1) + ")+1";
map.insert(make_pair(n, output));
return output;
}
else {
string output = "";
for (auto&& x : result) {
string tmp;
found = map.find(x);
if (found != map.end())
tmp = found->second;
else
{
tmp = solve(x);
map.insert(make_pair(n, tmp));
}
if (tmp != "1")
{
if (output != "")
output += "*";
output += "(" + tmp + ")";
}
}
map.insert(make_pair(n, output));
return output;
}
}
int main()
{
ios::sync_with_stdio(false);
int t;
cin >> t;
while (t--) {
int x;
cin >> x;
const string res = solve(x);
int ones = count_if(res.begin(), res.end(), isOne);
if (ones > 100)
cout << "NIE";
else
cout << res;
cout << endl;
}
return 0;
}
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 | #include <iostream> #include <string> #include <vector> #include <algorithm> #include <unordered_map> using namespace std; vector<int> primeFactors(int n) { vector<int> result; while (n % 2 == 0) { result.push_back(2); n = n / 2; } for (int i = 3; i <= sqrt(n); i = i + 2) { while (n%i == 0) { result.push_back(i); n = n / i; } } if (n > 2) result.push_back(n); return result; } bool isOne(char s) { return s == '1'; } unordered_map<int, string> map; string solve(int n) { if (n == 1) return "1"; else if (n == 2) return "1+1"; else if (n == 3) return "1+1+1"; auto found = map.find(n); if (found != map.end()) return found->second; auto result = primeFactors(n); if (result.size() == 1) { const string output = "(" + solve(n - 1) + ")+1"; map.insert(make_pair(n, output)); return output; } else { string output = ""; for (auto&& x : result) { string tmp; found = map.find(x); if (found != map.end()) tmp = found->second; else { tmp = solve(x); map.insert(make_pair(n, tmp)); } if (tmp != "1") { if (output != "") output += "*"; output += "(" + tmp + ")"; } } map.insert(make_pair(n, output)); return output; } } int main() { ios::sync_with_stdio(false); int t; cin >> t; while (t--) { int x; cin >> x; const string res = solve(x); int ones = count_if(res.begin(), res.end(), isOne); if (ones > 100) cout << "NIE"; else cout << res; cout << endl; } return 0; } |
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