zoj 1242 Carbon Dating
来源:互联网 发布:北微传感器 淘宝 编辑:程序博客网 时间:2024/03/29 18:26
//读了很久都找不出这题的公式,最后只有百度了!哎,笨啊!#include <iostream>#include <math.h>using namespace std;double d, w, age, temp;int main(){ int num=1; while (scanf("%lf %lf", &w, &d), w&&d) { printf("Sample #%d\n", num++); temp = d/w/810.0; temp = log(temp); age = temp/log(0.5)*5730.0; if (age < 10000) { temp = int(age/100.0+0.5); age = temp*100.0; } else { temp = int(age/1000.0+0.5); age = temp*1000.0; } printf("The approximate age is %.lf years.\n\n", age); } return 0;}
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