問題：A - Shiritori #include <iostream> #include <string> using namespace std; int main(void) { string a, b, c; cin.tie(0); ios::sync_with_stdio(false); cin >> a >> b >> c; cout << (a[a.length() -1] == b[0] && b[b.length() - 1] == c[0]? "YES" : "NO") << "\n</string></iostream>…