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- #include <algorithm>
- #include <iostream>
- #include <memory.h>
- #include <iterator>
- #include <cassert>
- #include <fstream>
- #include <iomanip>
- #include <cstdlib>
- #include <bitset>
- #include <vector>
- #include <cstdio>
- #include <string>
- #include <queue>
- #include <deque>
- #include <cmath>
- #include <ctime>
- #include <stack>
- #include <set>
- #include <map>
- using namespace std;
- int main ()
- {
- //freopen("input.txt" , "r" , stdin);
- //freopen("output.txt" , "w" , stdout);
- // ios_base::sync_with_stdio(false);
- string str;
- getline(cin, str);
- int fPos = 0, sPos = 0;
- for(int i = 0; i < str.size(); ++i) {
- if(str[i] == '@') {
- fPos = i;
- break;
- }
- }
- for(int i = str.size() - 1; i >= 0; --i) {
- if(str[i] == '@') {
- sPos = i;
- break;
- }
- }
- string s = "";
- for(int i = 0; i < fPos; ++i) {
- s += str[i];
- }
- for(int i = sPos; i >= fPos; --i) {
- s += str[i];
- }
- for(int i = sPos + 1; i < str.size(); ++i) {
- s += str[i];
- }
- cout << s << endl;
- return 0;
- }
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