Säähavainnot

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;

float ar[36];

void guess() {
  for (int i=0; i < 12; i++) {
    float cur = ar[i];
    float pre = ar[i+23];

    if (abs(cur-pre) > 0.1F) {
      ar[i+24] = pre + (cur < pre ? -0.1F : 0.1F);
    } else {
      ar[i+24] = cur;
    }
  }
}

int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  
  int n;
  cin >> n;

  for (int i=0; i < n; i++) {
    for (int j=0; j < 24; j++) {
      cin >> ar[j];
    }
    guess();
    for (int j=0; j < 12; j++) {
      float q = ar[j+24];
      if (isnan(q)) printf("? ");
      else printf("%f ", q);
    }
  }
}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: ACCEPTED

Test 6

Verdict: ACCEPTED

Test 7

Verdict: ACCEPTED

Test 8

Verdict: ACCEPTED