#include<stdio.h>
#include<string.h>
#define maxn 100005
int ans[maxn];
int main() {
int T, n;
memset(ans, 0, sizeof(ans));
for(int m = 1; m < maxn; m++) {
int x = m, y = m;
while(x > 0) { y += x % 10; x /= 10; }
if(ans[y] == 0 || m < ans[y]) ans[y] = m;
}
scanf("%d", &T);
while(T--) {
scanf("%d", &n);
printf("%d\n", ans[n]);
}
return 0;
}把代码中用到的知识点(语法知识点,算法知识点,不少于4个知识点)以及对结果的分析(时间复杂度等)写出来
Here's an analysis of the code, highlighting at least 4 knowledge points and providing an analysis of the results:
#include and #define preprocessor directives. #include is used to include standard input/output and string manipulation libraries. #define is used to create a constant maxn with a value of 100005.memset() function from string.h to initialize the ans array with zeros. This is an efficient way to set all elements of an array to a specific value.%) and integer division (/) operators to extract and sum digits of a number.scanf() and printf() functions for input and output operations, demonstrating basic I/O in C.maxn and stores them in the ans array for quick retrieval later.Analysis of the results and time complexity:
Time Complexity:
This analysis covers the main knowledge points used in the code and provides insights into its performance characteristics and algorithmic approach.