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@@ -0,0 +1,25 @@
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+#include<bits/stdc++.h>
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+using namespace std;
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+int main(){
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+ int a[21][21];
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+ a[0][0] = 1;
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+ for(int i = 0;i <= 20; i++){
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+ a[i][0] = a[i][i] = 1;
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+ }
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+ for(int i = 1; i <= 20; i++){
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+ for(int j = 1; j < i; j++){
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+ a[i][j] = a[i-1][j-1] + a[i-1][j];
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+ }
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+ }
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+
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+ int n;
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+ while(cin >> n){
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+ for(int i = 0; i < n; i++){
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+ for(int j = 0; j < i; j++){
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+ cout << a[i][j] << " ";
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+ }
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+ cout << a[i][i] << endl;
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+ }
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+ cout << endl;
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+ }
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+}
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