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add: 211231-CN

This commit is contained in:
Lam Haoyin 2021-12-31 11:31:59 +08:00
parent 1c21be7030
commit 5e86306f1d
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GPG Key ID: 8C089CB1A2B7544F
2 changed files with 32 additions and 1 deletions
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31
2112/211231-CN.cpp Normal file
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@ -0,0 +1,31 @@
#include <iostream>
#include <cmath>
class Solution {
public:
static bool checkPerfectNumber(int num) {
switch (num) {
case 6:
case 28:
case 496:
case 8128:
case 33550336:
return true;
default:
return false;
}
}
};
int main() {
for (int i = 1; i < 100000000; ++i) {
int s = 1;
int lim = int(std::sqrt(i + 0.50));
for (int j = 2; j <= lim; ++j)
if (i % j == 0)
s += j + i / j;
if (s == i)
std::printf("%d\n", i);
}
return 0;
}

2
2112/CMakeLists.txt
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@ -3,4 +3,4 @@ PROJECT(2112)
SET(CMAKE_CXX_STANDARD 23)
ADD_EXECUTABLE(2112 211231.cpp)
ADD_EXECUTABLE(2112 211231-CN.cpp)