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题目链接:http://bailian.openjudge.cn/practice/1007 C include include using namespace std; typedef struct number{ char s[51]; int num; }; int n,len; number 阅读全文
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"题目链接" 思路 求一个数列的前n项和(1/2, 1/3, ...., 1/n)大于所给数所需的项数。 C include int main() { float a; while( scanf("%f",&a) ) { if( a == 0.0 ) break; int n=2; float su 阅读全文
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"题目链接" 思路 开个一千万的数组计数,最后遍历即可。 C include include include using namespace std; int num=0; int mymap[10000000] = {0}; int change(char a[201]) { int j=0, r 阅读全文