Codechef_problem/How_Many_Maximums.cpp at main · aroyy007/Codechef_problem · GitHub

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#include <iostream>

#include <bits/stdc++.h>

#include <algorithm>

#include <vector>

#include <stdlib.h>

#include <time.h>

using namespace std;
#define optimize()\
ios_base::sync_with_stdio(0);\
cin.tie(0);\
cout.tie(0);
#define fraction()\
cout.unsetf(ios::floatfield);\
cout.precision(10);\
cout.setf(ios::fixed, ios::floatfield);
#define file()\
freopen("input.txt", "r", stdin);\
freopen("output.txt", "w", stdout);

typedef long long ll;
typedef vector < int > vi;
typedef vector < ll > vl;
typedef vector < vi > vvi;
typedef vector < vl > vvl;
typedef pair < int, int > pii;
typedef pair < double, double > pdd;
typedef pair < ll, ll > pll;
typedef vector < pii > vii;
typedef vector < pll > vll;
typedef double dl;
#define endl '\n'
#define PB push_back
#define coy cout << "YES" << endl;
#define con cout << "NO" << endl;
#define ain(A, NN)\
for (ll I = 0; I < NN; I++)\
    cin >> A[I]
using namespace std;

int main()
{
    optimize();

    int t;
    cin >> t;
    while (t--)
    {
        int n;
        cin >> n;

        string s;
        cin >> s;

        // if(n==2 && s.size()==1)
        // {
        //     cout<<1<<endl;
        //     continue;
        // }
        int c = 0;

        for (int i = 0; i < s.size() - 1; i++)
        {
            if ((s[i] == '0' && s[i + 1] == '1'))
            {
                c++;
            }
        }
        if (s[0] == '1')
        {
            c++;
        }
        if (s[n - 2] == '0')
        {
            c++;
        }

        cout << c << endl;
    }
    return 0;
}