#include <bits/stdc++.h>
#define LL long long
#define N 2e5 + 5
// #pragma GCC optimize("Ofast,no-stack-protector,unroll-loops,fast-math")
// #pragma GCC target("sse,sse2,sse3,ssse3,sse4.1,sse4.2,avx,avx2,popcnt,tune=native")
 
using namespace std;
 
void solve(){
    int n, m, q;
    cin >> n >> m >> q;
    string s1, s2;
    cin >> s1 >> s2;
    while (q--){
        int l1, r1, l2, r2;
        cin >> l1 >> r1 >> l2 >> r2;
        string a = s1.substr(l1 - 1, r1 - l1 + 1);
        string b = s2.substr(l2 - 1, r2 - l2 + 1);
        if (a < b){
            cout << "<"
                 << "\n";
        }else if (a > b){
            cout << ">"
                 << "\n";
        }else{
            cout << "="
                 << "\n";
        }
    }
}
 
int main()
{
    ios::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    solve();
    return 0;
}

这样子都能过，是不是有点奇异搞笑

https://ac.nowcoder.com/acm/contest/76681/I

题目链接