举手

⎛⎝≥⏝⏝≤⎠⎞⎛⎝≥⏝⏝≤⎠⎞⎛⎝≥⏝⏝≤⎠⎞⎛⎝≥⏝⏝≤⎠⎞⎛⎝≥⏝⏝≤⎠⎞⎛⎝≥⏝⏝≤⎠⎞⎛⎝≥⏝⏝≤⎠⎞⎛⎝≥⏝⏝≤⎠⎞