纯C
跟着第一感觉走
#include <stdlib.h> #include <stdio.h> int main() { int num; while(scanf("%d", &num) != EOF) { int tri = num * num * num; for(int i=1; i<65000; i += 2) { int sum = (i+(i+(num-1)*2))*num/2; if(sum == tri) { for(int j=0; j<num-1; j++) { printf("%d+", i+2*j); } printf("%d\n", i+2*(num-1)); } } } return 0; }