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1038 recover the smallest number (30 points)

2022-07-22 20:33:00 【Konjaku for learning programming】

1038 Recover the Smallest Number (30 branch )

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#include <iostream>
#include <algorithm>
#include <vector>
using namespace std;
bool cmp(string a, string b){
    
	return a + b < b + a;
}
int main() {
    
	int n;
	cin >> n;
	vector<string> v(n);
	for(int i = 0; i < n; ++i)
		cin >> v[i];
	sort(v.begin(), v.end(), cmp);
	string s;
	for(int i = 0; i < n; ++i)
		s += v[i];
	while(s[0] == '0')
		s.erase(s.begin());
	cout << s;
	if(s.length() == 0) cout << 0;
}