题解 | 小红的排列构造①
小红的排列构造①
https://www.nowcoder.com/practice/2b0a9318cc0740d1a78eec06162e7bea
#include <stdio.h>
int main(void) {
int n;
scanf("%d", &n);
if (n == 1 || n == 2) {
printf("-1\n");
return 0;
}
else{
printf("3 2 1 ");
for (int i = 4; i <= n; i++)
printf("%d ", i);
}
return 0;
}
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