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#include<bits/stdc++.h>
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using namespace std;
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void show(int n,int i,int j) {
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int a,b,c;
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b=i;
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c=j;
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for(a=1; a<=n; a++) { //<2F><><EFBFBD><EFBFBD>ͬһ<CDAC><D2BB><EFBFBD>ϵ<EFBFBD>λ<EFBFBD><CEBB>
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printf("(%d,%d)",i,a);
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}
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printf("\n");
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for(a=1; a<=n; a++) { //<2F><><EFBFBD><EFBFBD>ͬһ<CDAC><D2BB><EFBFBD>ϵ<EFBFBD>λ<EFBFBD><CEBB>
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printf("(%d,%d)",a,j);
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}
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printf("\n");
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while(i>0&&j>0) { //<2F><><EFBFBD>ϵ<EFBFBD><CFB5><EFBFBD><EFBFBD>¶Խ<C2B6><D4BD><EFBFBD><EFBFBD>ϵĸ<CFB5><C4B8>ӵ<EFBFBD>λ<EFBFBD><CEBB>
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i--;
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j--;
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}
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i++;
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j++;
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while(i<=n&&j<=n) {
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printf("(%d,%d)",i,j);
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i++;
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j++;
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}
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printf("\n");
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i=b;
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j=c;
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while(i<=n&&j>0) { //<2F><><EFBFBD>µ<EFBFBD><C2B5><EFBFBD><EFBFBD>϶Խ<CFB6><D4BD><EFBFBD><EFBFBD>ϵĸ<CFB5><C4B8>ӵ<EFBFBD>λ<EFBFBD><CEBB>
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i++;
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j--;
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}
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i--;
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j++;
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while(i<=n&&j<=n&&i>0&&j>0) {
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printf("(%d,%d)",i,j);
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i--;
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j++;
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}
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}
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int main() {
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int n,i,j;
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scanf("%d %d %d",&n,&i,&j);
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if(1<=i&&i<=n&&1<=j&&j<=n)
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show(n,i,j);
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return 0;
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}
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