宁静致远，淡泊明志。

摘要： #includeint main(){ int n; while(scanf("%d",&n)!=EOF) { if(n%2==0) printf("%d\n\n",n/2*(n+1)); else printf("%d\n\n",(n+1)/2*n); } return 0;}//通过#includeint main(){ int n; while(scanf("%d",&n)) { if(n%2==0) printf("%d\n\n",n/2*(n+1));... 阅读全文