CF 1535C Unstable String

#define _CRT_SECURE_NO_WARNINGS
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
ll aa[200005],bb[200005],n;
ll f(ll *p)
{
    
    
    ll cnt=0,sum=0;
    for(int i=0;i<=n;i++)
    {
    
    
        if(p[i]==0 || i==n){
    
    sum+=cnt*(cnt+1)/2;cnt=0;continue;}
        cnt++;
    }
    return sum;
}
ll cal(string t)
{
    
       
    ll cnt=0,sum=0;
    for(int i=0;i<=n;i++)
    {
    
    
        if(t[i]!='?' || i==n){
    
    sum+=cnt*(cnt+1)/2;cnt=0;continue;}
        cnt++;
    }
    return sum;
}
void solve(){
    
    
    string t;
    cin>>t;
    n=t.size();
    for(int i=0;i<n;i++)aa[i]=bb[i]=0;
    string tmp="01";
    for(ll i=0;i<n;i++)if(t[i]=='?' || t[i]==tmp[i%2])aa[i]=1;//-'0'
    next_permutation(tmp.begin(),tmp.end());
    for(ll i=0;i<n;i++)if(t[i]=='?' || t[i]==tmp[i%2])bb[i]=1;
    ll sum=0;
    sum=f(aa)+f(bb)-cal(t);
    printf("%lld\n",sum);
}
int main()
{
    
    
    ll T;
    scanf("%lld",&T);
    while(T--)solve();
    return 0;
}