UVa 10370 Above Average (water ver.)
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10370 - Above Average
Time limit: 3.000 seconds
http://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=24&page=show_problem&problem=1311
It is said that 90% of frosh expect to be above average in their class. You are to provide a reality check.
The first line of standard input contains an integer C, the number of test cases. C data sets follow. Each data set begins with an integer, N, the number of people in the class (1 <= N <= 1000). N integers follow, separated by spaces or newlines, each giving the final grade (an integer between 0 and 100) of a student in the class. For each case you are to output a line giving the percentage of students whose grade is above average, rounded to 3 decimal places.
Sample Input
55 50 50 70 80 1007 100 95 90 80 70 60 503 70 90 803 70 90 819 100 99 98 97 96 95 94 93 91
Output for Sample Input
40.000%57.143%33.333%66.667%55.556%
完整代码:
/*0.012s*/#include <cstdio>int num[1010];int main(void){int i, t, n, average, count;scanf("%d", &t);while (t--){scanf("%d", &n);average = 0;for (i = 0; i < n; i++){scanf("%d", &num[i]);average += num[i];}average /= n;///由于是大于,所以没问题~count = 0;for (i = 0; i < n; i++)if (num[i] > average) count++;printf("%.3f%%\n", (double)count / n * 100);}return 0;}
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