mimic
40 lines
694 B
C
40 lines
694 B
C
#include<stdio.h>
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int main(int argc, char *argv[])
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{
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int n, i,j,k,l;
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scanf("%d",&n);
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int a[5005],b[5005],c[5005],d[5005];
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int w=0,x=0,y=0;
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for(i=1,j=1,k=1,l=1;i<=n;i++){
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scanf("%d",&a[i]);
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if(a[i]==1){
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b[j]=i;
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w++;
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j++;
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}
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else if(a[i]==2){
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c[k]=i;
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x++;
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k++;
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}
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else if(a[i]==3){
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d[l]=i;
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y++;
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l++;
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}
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}
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int min=w;
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if(x<min){
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min=x;
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}
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else if(y<min){
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min=y;
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}
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printf("%d\n",min);
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for(i=1;i<=min;i++){
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printf("%d %d %d\n",b[i],c[i],d[i]);
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}
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return 0;
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}
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