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bj_1855.cpp
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51 lines (41 loc) · 894 Bytes
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#include <iostream>
#include <string>
#include <math.h>
#include <algorithm>
#include <utility>
using namespace std;
int main() {
cin.tie(NULL);
cout.tie(NULL);
ios_base::sync_with_stdio(false);
int n;
cin >> n;
cin.ignore();
string M;
cin >> M;
int y = M.size() / n;
if(M.size() % n != 0) {
y += 1;
}
int idx = 0;
char arr[200][20] = {};
for(int i = 0; i< y; i++) {
for(int j = 0; j<n; j++) {
if(idx != M.size()) {
if(i % 2 == 0)
arr[i][j] = M.at(idx++);
else
arr[i][(n-1-j)] = M.at(idx++);
}
}
}
for(int j = 0; j<n; j++) {
for(int i = 0; i<y; i++) {
if(arr[i][j] != 0) {
cout << arr[i][j];
}
}
}
cout << "\n";
return 0;
}