Rotations

input/code.cpp: In function 'bool better(std::__cxx11::string, int, int)':
input/code.cpp:19:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     while(k < s.size() && s[(i + k) % s.size()] == s[(j + k) % s.size()]) k++;
           ~~^~~~~~~~~~
input/code.cpp: In function 'int main()':
input/code.cpp:30:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i = 1; i < s.size(); i++)
                    ~~^~~~~~~~~~

#include <vector>
#include <iostream>
#include <string>


using namespace std;

void print(string s, int a) {
    int n = s.size();
    for(int i = a; i < n; i++)
        cout << s[i];
    for(int i = 0; i < a; i++)
        cout << s[i];
    cout << endl;
}

bool better(string s, int i, int j) {
    int k = 0;
    while(k < s.size() && s[(i + k) % s.size()] == s[(j + k) % s.size()]) k++; 
    return s[i] < s[j];
}


int main() {
    string s;
    cin >> s;

    int b = 0;

    for(int i = 1; i < s.size(); i++)
        if(better(s, i, b)) b = i;

    print(s, b);

    return 0;
}

Test 1

Verdict: TIME LIMIT EXCEEDED

Test 2

Verdict: TIME LIMIT EXCEEDED

Test 3

Verdict: WRONG ANSWER

Test 4

Verdict: WRONG ANSWER

Test 5

Verdict: WRONG ANSWER

Test 6

Verdict: TIME LIMIT EXCEEDED

Test 7

Verdict: TIME LIMIT EXCEEDED

Test 8

Verdict: ACCEPTED

Test 9

Verdict: ACCEPTED

Test 10

Verdict: ACCEPTED

Test 11

Verdict: ACCEPTED

Test 12

Verdict: TIME LIMIT EXCEEDED