38 lines
782 B
C++
38 lines
782 B
C++
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#include<iostream>
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#include<fstream>
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#include<algorithm>
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#include<stdlib.h>
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#include<math.h>
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using namespace std;
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//fstream file("oj1.txt", ios::in);
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int pows[10] = { 1,10,100,1000,10000,100000,1000000,10000000,100000000,1000000000};
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int numPos(int num, int pos) {
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return (num / pows[pos]) % 10;
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}
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int main() {
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//std::ios::sync_with_stdio(false);
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int a[10][10]={0};
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int n, num,pos,ansnum=0;
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int ans[10];
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cin >> n;
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//file >> n;
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for (int i = 0; i < 3*n-1; i++) {
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cin >> num;
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//file >> num;
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for (pos = 0; pos < 10; pos++) {
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a[numPos(num, pos)][pos] += 1;
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}
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}
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for (int i = 0; i < 10; i++) {
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for (int j = 0; j < 10; j++) {
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if (a[j][i] % 3) {
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ans[9-i] = j;
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}
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}
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}
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for (int i = 0; i < 10; i++) {
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ansnum *= 10;
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ansnum += ans[i];
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}
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cout << ansnum;
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}
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