Ran into this, and the solution here works: https://stackoverflow.com/questions/51334732/rails-5-2-0-with-ruby-2-5-1-console-warning-already-initialized-constant I understand 1.0.2 stays installed as the default, 1.1.0 being installed too. Hence the…
题目:http://poj.org/problem?id=3013 求每个点到1的最短路.不是最小生成树. 总是WA.看讨论里说INF至少2e10,于是真的A了! 算一下,dis最大可能3276800000,于是开成3276800001,果然可A!还快了16ms(?)! 不过出现了: [Warning] this decimal constant is unsigned only in ISO C90 [enabled by default].是什么意思呢? 总之以后设上界的时候还是略算一下.何…
点击打开题目链接 题目意思就是自己实现一个atoi函数,也就是将字符串转换成int型. 关于INT_MAX和INT_MIN, 只是在<limits.h>文件中定义的宏..分别是int型可以表示的最大值和最小值 还有就是定义大整数常量的时候,会出现这种警告:warning: this decimal constant is unsigned only in ISO C90 c的标准写道: The C90 rule that the default type of a decimal intege…