[백준] 소인수분해 11653 Python C++

Python

N = int(input())
summ = 0
i = 0
 
while summ <= N:
    i+=1
    summ+=i
 
print(i-1)

C++

#include <iostream>
 
using namespace std;
 
int main() {
 
    int i = 0;
    long sum = 0;
    long N = 0;
    scanf("%ld", &N);
 
    while (sum <= N){
        i += 1;
        sum += i;
    }
    printf("%d\n", i - 1);
    return 0;
}