Online Judge【CodeForces】[675A]Infinite Sequence问题描述 问题分析求一等差数列中有无某一数只需减去首项后看能否整除c即可需要注意的是c为0的情况 1 2 3 4 5 6 7 8 9 10 11 #include<stdio.h> int main() { int a,b,c; while(scanf("%d %d %d",&a,&b,&c)!=EOF) { if(c==0) { printf("%s\n",b-a==0?"YES":"NO"); } else printf("%s\n",(b-a)%c==0&&(b-a)/c>=0?"YES":"NO"); } return 0; }题目地址:【CodeForces】[675A]Infinite Sequence