s = "Qazaqstan-2030"
parts = s.split("-")
parts[1] = "2050"
result = parts[0] + "-" + parts[1]
print(result)
cyA9ICJRYXphcXN0YW4tMjAzMCIKcGFydHMgPSBzLnNwbGl0KCItIikKcGFydHNbMV0gPSAiMjA1MCIKcmVzdWx0ID0gcGFydHNbMF0gKyAiLSIgKyBwYXJ0c1sxXQpwcmludChyZXN1bHQp