{"trustable":false,"prependHtml":"\u003cscript\u003e window.katexOptions \u003d { disable: true }; \u003c/script\u003e\n\u003cscript type\u003d\"text/x-mathjax-config\"\u003e\n MathJax.Hub.Config({\n tex2jax: {\n inlineMath: [[\u0027$$$\u0027,\u0027$$$\u0027], [\u0027$\u0027,\u0027$\u0027]],\n displayMath: [[\u0027$$$$$$\u0027,\u0027$$$$$$\u0027], [\u0027$$\u0027,\u0027$$\u0027]]\n }\n });\n\u003c/script\u003e\n\u003cscript async src\u003d\"https://mathjax.codeforces.org/MathJax.js?config\u003dTeX-AMS-MML_HTMLorMML\" type\u003d\"text/javascript\"\u003e\u003c/script\u003e","sections":[{"title":"","value":{"format":"HTML","content":"计算SUM(n) \u003d 1+2+3+4+5.....n的结果."}},{"title":"Input","value":{"format":"HTML","content":"输入包含几个n的值,每个n占一行"}},{"title":"Output","value":{"format":"HTML","content":"对于每一个n的数据,输出SUM(n) 的结果,每个占一行,结果在三十二位无符号整数范围内。每个答案行之后请再输出一个空行"}},{"title":"Sample Input","value":{"format":"HTML","content":"\u003cpre\u003e1\n100\u003c/pre\u003e"}},{"title":"Sample Output","value":{"format":"HTML","content":"\u003cpre\u003e1\n\n5050\u003c/pre\u003e"}},{"title":"Hint","value":{"format":"HTML","content":"三十二位无符号整数声明方式为\nunsigned int a;"}}]}