uva-488 三角波

Triangle Wave

In this problem you are to generate a triangular wave form according to a specified pair of Amplitude and Frequency.

Input and Output

The input begins with a single positive integer on a line by itself indicating the number of the cases following, each of them as described below. This line is followed by a blank line, and there is also a blankline between two consecutive inputs.Each input set will contain two integers, each on a separate line. The first integer is the Amplitude; the second integer is the Frequency.For each test case, the output must follow the description below. The outputs of two consecutive cases will be separated by a blank line.For the output of your program, you will be printing wave forms each separated by a blank line. The total number of wave forms equals the Frequency, and the horizontal ``height'' of each wave equals the Amplitude.The Amplitude will never be greater than nine.The waveform itself should be filled with integers on each line which indicate the ``height'' of that line.NOTE: There is a blank line after each separate waveform, excluding the last one.

Sample Input

1

3
2

Sample Output

1
22
333
22
1

1
22
333
22
1

wrong answer了好久，烦死我了。。。

#include <cstdio>#include<cstring>using namespace std;void draw_wave(int am){for(int i=1;i<=am;i++){for(int j=0;j<i;j++){printf("%d",i);}printf("\n");}for(int i=am-1;i>=1;i--){for(int j=0;j<i;j++){printf("%d",i);}printf("\n");}}int main(){int n;scanf("%d",&n);int first=1;while(n--){if(first) first=0;else printf("\n");int am,fre;scanf("%d%d",&am,&fre);for(int i=0;i<fre-1;i++){draw_wave(am);printf("\n");}draw_wave(am);}return 0;}

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