POJ(PKU) 3173 Parkside's Triangle

やるだけ・

#include <cstdio>

using namespace std;

int main(){
  
  int n,s;
  int d[21][21]={0};
  
  scanf("%d%d",&n,&s);
  int co = s;
  for(int j = 0;j < n;j++){
    for(int i = 0;i < n;i++){
      if(j >= i){
	d[i][j] = co;
	co++;
	if(co == 10)co = 1;
      }
    }
  }
  
  for(int i = 0;i < n;i++){
    for(int j = 0;j < n;j++){
      if(d[i][j] == 0){
	printf("  ");
      }else{
	printf("%d ",d[i][j]);
      }
    }
    printf("\n");
  }
  
  return 0;
  
}