The time limit of Xiao Ming's investigation work: +Ms | Memory Limit:65535KB Difficulty:1
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Describe
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Xiao Ming's teacher assigned a survey homework, Xiao Ming want to ask some students in school to do a questionnaire survey, bright Xiaoming for the objectivity of the experiment, want to use their computer knowledge to help themselves. He first used the computer to generate N 1 to 1000 random integer (0<n≤1000), for the number of repetitions, only one, the remaining same number of the same, the different numbers correspond to different student's number. Then the numbers from small to large sorting, in line with the order to find students to do the investigation. Please help clearly to complete the "go to Heavy" and "sort" work.
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input
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input has 2 rows, the 1th behavior 1 positive integers, indicating the number of random numbers generated:
N
2nd row has N spaces separated by a positive integer, the resulting random number. The
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output
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output is also 2 rows, and the 1th behavior is 1 positive integer m, which represents the number of different random numbers. The 2nd behavior is a positive integer separated by a space, which is a different random number from small to large sequence.
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Sample Input
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1020-All-in-a-page
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Example Output
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815-All-in-a-box
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#include <stdio.h> int main () {int i,j,n,sum=0,x[1001]={0}; scanf ("%d", &n); for (i=1;i<=n;i++) {SC ANF ("%d", &j); if (x[j]==0) sum++;x[j]=1; } printf ("%d\n", sum); for (i=1;i<=1000;i++) if (x[i]==1) printf ("%d", I);//There is a sort function. return 0; }
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Nyoj 48 survey of Xiao Ming's work
