classe = {
    "Alice": {
        "maths": 15,
        "physique": 13,
        "SII": 14
    },
    "Bob": {
        "maths": 11,
        "physique": 14,
        "SII": 13
    },
    "Claire": {
        "maths": 18,
        "physique": 17,
        "SII": 16
    },
    "David": {
        "maths": 13,
        "physique": 12,
        "SII": 15
    },
    "Emma": {
        "maths": 16,
        "physique": 15,
        "SII": 14
    }
}