feat: Add solutions for Codeforces problems 1999 A, B, C, and D

Codes/1999 A - A+B Again/1999A.cpp

@@ -0,0 +1,41 @@
+#include <bits/stdc++.h>
+using namespace std;
+#ifdef ONLINE_JUDGE
+#define dbg(...)
+#else
+#include "Assets/debug.h"
+#endif
+#define  int  long long
+#define  ll  long long
+#define  endl  '\n'
+#define  ff  first
+#define  ss  second
+#define  ins  insert
+#define  pb  push_back
+#define  ppb  pop_back
+#define  sz(x)  (int)(x).size()
+#define  all(x)  x.begin(), x.end()
+#define  rep(i,a,b)  for(int i=a; i<b; ++i)
+#define  rrep(i,a,b) for(int i=a; i>=b; --i)
+#define  yn(f)  f? cout<<"YES\n":cout<<"NO\n"
+#define  FAST  (ios_base::sync_with_stdio(false), cin.tie(nullptr));
+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;
+    cout<<s[1]+s[0]-'0'-'0'<<endl;
+}
+
+signed main()
+{
+    FAST;
+    int TCS = 1;
+    cin >> TCS;
+    for (int TC = 1; TC <= TCS; ++TC)
+    {
+      // cout<<"Case "<<TC<<": ";
+      solve();
+    }
+}

Codes/1999 B - Card Game/1999B.cpp

@@ -0,0 +1,74 @@
+#include <bits/stdc++.h>
+using namespace std;
+#ifdef ONLINE_JUDGE
+#define dbg(...)
+#else
+#include "Assets/debug.h"
+#endif
+#define  int  long long
+#define  ll  long long
+#define  endl  '\n'
+#define  ff  first
+#define  ss  second
+#define  ins  insert
+#define  pb  push_back
+#define  ppb  pop_back
+#define  sz(x)  (int)(x).size()
+#define  all(x)  x.begin(), x.end()
+#define  rep(i,a,b)  for(int i=a; i<b; ++i)
+#define  rrep(i,a,b) for(int i=a; i>=b; --i)
+#define  yn(f)  f? cout<<"YES\n":cout<<"NO\n"
+#define  FAST  (ios_base::sync_with_stdio(false), cin.tie(nullptr));
+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 a,b,c,d;
+    cin>>a>>b>>c>>d;
+    int ans=0;
+    if(a>c)
+    {
+        if(b>=d) ans++;
+    }
+    if(a==c)
+    {
+        if(b>d) ans++;
+    }
+    if(a>d)
+    {
+        if(b>=c)    ans++;
+    }
+    if(a==d)
+    {
+        if(b>c) ans++;
+    }
+    if(b>c)
+    {
+        if(a>=d)   ans++;
+    }
+    if(b==c)
+    {
+        if(a>d) ans++;
+    }
+    if(b>d)
+    {
+        if(a>=c) ans++;
+    }
+    if(b==d)
+    {
+        if(a>c) ans++;
+    }
+    cout<<ans<<endl;
+}
+
+signed main()
+{
+    FAST;
+    int TCS = 1;
+    cin >> TCS;
+    for (int TC = 1; TC <= TCS; ++TC)
+    {
+      // cout<<"Case "<<TC<<": ";
+      solve();
+    }
+}

Codes/1999 C - Showering/1999C.cpp

@@ -0,0 +1,53 @@
+#include <bits/stdc++.h>
+using namespace std;
+#ifdef ONLINE_JUDGE
+#define dbg(...)
+#else
+#include "Assets/debug.h"
+#endif
+#define  int  long long
+#define  ll  long long
+#define  endl  '\n'
+#define  ff  first
+#define  ss  second
+#define  ins  insert
+#define  pb  push_back
+#define  ppb  pop_back
+#define  sz(x)  (int)(x).size()
+#define  all(x)  x.begin(), x.end()
+#define  rep(i,a,b)  for(int i=a; i<b; ++i)
+#define  rrep(i,a,b) for(int i=a; i>=b; --i)
+#define  yn(f)  f? cout<<"YES\n":cout<<"NO\n"
+#define  FAST  (ios_base::sync_with_stdio(false), cin.tie(nullptr));
+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,s,m;
+    cin>>n>>s>>m;
+    int last=0,f=0;
+    while(n--)
+    {
+        int l,r;
+        cin>>l>>r;
+        int t=l-last;
+        dbg(l,r,last,t,s);
+        last=r;
+        if(t>=s) f=1;
+    }
+    if(m-last>=s)   f=1;
+    yn(f);
+}
+
+signed main()
+{
+    FAST;
+    int TCS = 1;
+    cin >> TCS;
+    for (int TC = 1; TC <= TCS; ++TC)
+    {
+        // cout<<"Case "<<TC<<": ";
+        dbg(TC);
+        solve();
+    }
+}

Codes/1999 D - Slavic's Exam/1999D.cpp

@@ -0,0 +1,59 @@
+#include <bits/stdc++.h>
+using namespace std;
+#ifdef ONLINE_JUDGE
+#define dbg(...)
+#else
+#include "Assets/debug.h"
+#endif
+#define  int  long long
+#define  ll  long long
+#define  endl  '\n'
+#define  ff  first
+#define  ss  second
+#define  ins  insert
+#define  pb  push_back
+#define  ppb  pop_back
+#define  sz(x)  (int)(x).size()
+#define  all(x)  x.begin(), x.end()
+#define  rep(i,a,b)  for(int i=a; i<b; ++i)
+#define  rrep(i,a,b) for(int i=a; i>=b; --i)
+#define  yn(f)  f? cout<<"YES\n":cout<<"NO\n"
+#define  FAST  (ios_base::sync_with_stdio(false), cin.tie(nullptr));
+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,t;
+    cin>>s>>t;
+    int i=0, j=0;
+    for(; i<sz(s) && j<sz(t); i++)
+    {
+        dbg(s[i], t[j]);
+        if(s[i]==t[j]) j++;
+        else if(s[i]=='?')  s[i]=t[j++];
+        dbg(s,t);
+    }
+    while(i<sz(s))  
+    {
+        if(s[i]=='?') s[i]='a';
+        i++;
+    }
+    if(j==sz(t))
+    {
+        yn(1);
+        cout<<s<<endl;
+    }
+    else    yn(0);
+}
+
+signed main()
+{
+    FAST;
+    int TCS = 1;
+    cin >> TCS;
+    for (int TC = 1; TC <= TCS; ++TC)
+    {
+      // cout<<"Case "<<TC<<": ";
+      solve();
+    }
+}

Readme.md

@@ -383,6 +383,10 @@ This repository contains my solutions of Codeforces problems. They are in C++ la
 | 371 | 1997 B | Make Three Regions | [Question](https://codeforces.com/problemset/problem/1997/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1997%20B%20-%20Make%20Three%20Regions)
 | 372 | 1997 C | Even Positions | [Question](https://codeforces.com/problemset/problem/1997/C) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1997%20C%20-%20Even%20Positions)
 | 373 | 1997 D | Maximize the Root | [Question](https://codeforces.com/problemset/problem/1997/D) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1997%20D%20-%20Maximize%20the%20Root)
+| 374 | 1999 A | A+B Again | [Question](https://codeforces.com/problemset/problem/1999/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1999%20A%20-%20A+B%20Again)
+| 375 | 1999 B | Card Game | [Question](https://codeforces.com/problemset/problem/1999/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1999%20B%20-%20Card%20Game)
+| 376 | 1999 C | Showering | [Question](https://codeforces.com/problemset/problem/1999/C) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1999%20C%20-%20Showering)
+| 377 | 1999 D | Slavic's Exam | [Question](https://codeforces.com/problemset/problem/1999/D) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1999%20D%20-%20Slavic's%20Exam)