moyenne deux à deux mean two by two 2

const N = parseInt(readline());
var inputs = readline().split(' ').map(a=>a*1);7
//inputs.push(0)
//print(inputs)
let results = []
let prec = -1
for (let i = 0; i < N; i++) {
    if(i%2 == 1) {
        results.push((inputs[i]+prec)/2)
        prec = -1
    }
    else if(i == N-1)
        results.push((inputs[i])/2)
    else
        prec = inputs[i]
}
print(results.join(' '))