/in/foo.cc:1:26: warning: extra tokens at end of #include directive
    1 | #include <iostream>using namespace std;int main() {int H1, H2, H3, H4;cin >> H1 >> H2 >> H3 >> H4;int ans = H2;int d = H1 - H2;if (d < 0) d = -d;int mnd = d;d = H1 - H3;if (d < 0) d = -d;if (d < mnd || (d == mnd && H3 < ans))ans = H3, mnd = d;d = H1 - H4;if (d < 0) d = -d;if (d < mnd || (d == mnd && H4 < ans))ans = H4;cout << ans << endl;return 0;}
      |                          ^~~~~~~~~
/in/foo.cc:1:10: fatal error: iostream>usin: No such file or directory
    1 | #include <iostream>using namespace std;int main() {int H1, H2, H3, H4;cin >> H1 >> H2 >> H3 >> H4;int ans = H2;int d = H1 - H2;if (d < 0) d = -d;int mnd = d;d = H1 - H3;if (d < 0) d = -d;if (d < mnd || (d == mnd && H3 < ans))ans = H3, mnd = d;d = H1 - H4;if (d < 0) d = -d;if (d < mnd || (d == mnd && H4 < ans))ans = H4;cout << ans << endl;return 0;}
      |          ^~~~~~~~~~~~~~~
compilation terminated.