FlandreScarle7/Codeforces-SolutionsA
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Added solutions for Codeforces problems 1969A and 1969B

Browse Source
This commit is contained in:
ShazidMahsrafi 2024-04-30 12:26:59 +06:00
parent 18d2cecec1
commit 8f472939de
3 changed files with 83 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

42
Codes/1969 A - Two Friends/1969A.cpp Normal file
View File

@ -0,0 +1,42 @@
#include<bits/stdc++.h>
using namespace std;
#ifdef ONLINE_JUDGE
#define dbg(...)
#else
#include "debug.h"
#endif
#define ll long long
#define endl '\n'
#define all(x) x.begin(), x.end()
#define sz(x) (int)(x).size()
#define yes cout<<"YES"<<endl
#define no cout<<"NO"<<endl
#define FAST (ios_base:: sync_with_stdio(false),cin.tie(NULL));
ll pow(ll x,ll y,ll m=1e9+7){ll ans=1;x%=m;while(y){if(y&1)ans=(ans*x)%m;x=(x*x)%m;y>>=1;}return ans;}
void solve()
{
int n;
cin>>n;
vector<int>v(n);
for(auto &i:v) cin>>i;
for(int i=0; i<n; ++i)
{
int fnd=i+1;
int bst=v[i];
if(v[bst-1]==fnd)
{
cout<<2<<endl;
return;
}
}
cout<<3<<endl;
}
signed main()
{
FAST;
int TC = 1;
cin >> TC;
while (TC--) solve();
}

39
Codes/1969 B - Shifts and Sorting/1969B.cpp Normal file
View File

@ -0,0 +1,39 @@
#include<bits/stdc++.h>
using namespace std;
#ifdef ONLINE_JUDGE
#define dbg(...)
#else
#include "debug.h"
#endif
#define ll long long
#define endl '\n'
#define all(x) x.begin(), x.end()
#define sz(x) (int)(x).size()
#define yes cout<<"YES"<<endl
#define no cout<<"NO"<<endl
#define FAST (ios_base:: sync_with_stdio(false),cin.tie(NULL));
ll pow(ll x,ll y,ll m=1e9+7){ll ans=1;x%=m;while(y){if(y&1)ans=(ans*x)%m;x=(x*x)%m;y>>=1;}return ans;}
void solve()
{
string s;
cin>>s;
ll ans=0,ct=0;
for(auto c:s)
{
if(c=='1')
ct++;
else if(c=='0' && ct)
ans += ct+1;
}
cout<<ans<<endl;
}
signed main()
{
FAST;
int TC = 1;
cin >> TC;
while (TC--) solve();
}

2
Readme.md
View File

@ -306,6 +306,8 @@ This repository contains my solutions of Codeforces problems. They are in C++ la
| 294 | 1957 A | Stickogon | [Question](https://codeforces.com/problemset/problem/1957/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1957%20A%20-%20Stickogon)
| 295 | 1957 B | A BIT of a Construction | [Question](https://codeforces.com/problemset/problem/1957/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1957%20B%20-%20A%20BIT%20of%20a%20Construction)
| 296 | 1957 C | How Does the Rook Move | [Question](https://codeforces.com/problemset/problem/1957/C) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1957%20C%20-%20How%20Does%20the%20Rook%20Move)
| 297 | 1969 A | Two Friends | [Question](https://codeforces.com/problemset/problem/1969/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1969%20A%20-%20Two%20Friends)
| 298 | 1969 B | Shifts and Sorting | [Question](https://codeforces.com/problemset/problem/1969/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1969%20B%20-%20Shifts%20and%20Sorting)