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EXPTREE (JULY 17) [CPP] #197

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1 change: 1 addition & 0 deletions .gitignore
Original file line number Diff line number Diff line change
Expand Up @@ -17,5 +17,6 @@
*.class
*.pyc
*.html
.idea/
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Rather simply delete the .idea files for now and in another PR you can do this 😉



4 changes: 4 additions & 0 deletions .idea/misc.xml

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6 changes: 6 additions & 0 deletions .idea/vcs.xml

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2 changes: 1 addition & 1 deletion 2017/JULY.md
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Expand Up @@ -13,7 +13,7 @@
| [JULY17](https://www.codechef.com/JULY17) | [CHEFSIGN](https://www.codechef.com/JULY17/problems/CHEFSIGN) | ★★ | | [![image](../img/GH.png)](JULY/JULY17/CHEFSIGN/CHEFSIGN.cpp) [![image](../img/CC.png)](https://www.codechef.com/viewsolution/14502863) (100 pts) [![image](../img/AC.png)](#) | | [![image](../img/GH.png)](JULY/JULY17/CHEFSIGN/CHEFSIGN.py) [![image](../img/CC.png)](https://www.codechef.com/viewsolution/14488195) (100 pts) [![image](../img/AC.png)](#) |
| [JULY17](https://www.codechef.com/JULY17) | [CALC](https://www.codechef.com/JULY17/problems/CALC) | ★★★ | [![image](../img/GH.png)](JULY/JULY17/CALC/CALC.c) [![image](../img/CC.png)](https://www.codechef.com/viewsolution/14483078) (100 pts) [![image](../img/AC.png)](#) | [![image](../img/GH.png)](JULY/JULY17/CALC/CALC.cpp) [![image](../img/CC.png)](https://www.codechef.com/viewsolution/14439041) (100 pts) [![image](../img/AC.png)](#) | | [![image](../img/GH.png)](JULY/JULY17/CALC/CALC.py) [![image](../img/CC.png)](https://www.codechef.com/viewsolution/14490655) (100 pts) [![image](../img/AC.png)](#) |
| [JULY17](https://www.codechef.com/JULY17) | [IPCTRAIN](https://www.codechef.com/JULY17/problems/IPCTRAIN) | ★★★ | | [![image](../img/GH.png)](JULY/JULY17/IPCTRAIN/IPCTRAIN.cpp)  [![image](../img/CC.png)](https://www.codechef.com/viewsolution/14431781) (100 pts) [![image](../img/AC.png)](#) | | |
| [JULY17](https://www.codechef.com/JULY17) | [EXPTREE](https://www.codechef.com/JULY17/problems/EXPTREE) | ★★★★ | | | | [![image](../img/GH.png)](JULY/JULY17/EXPTREE/EXPTREE.py)  [![image](../img/CC.png)](https://www.codechef.com/viewsolution/14541593) (100 pts) [![image](../img/AC.png)](#) |
| [JULY17](https://www.codechef.com/JULY17) | [EXPTREE](https://www.codechef.com/JULY17/problems/EXPTREE) | ★★★★ | | [![image](../img/GH.png)](JULY/JULY17/EXPTREE/EXPTREE.cpp)  [![image](../img/CC.png)](https://www.codechef.com/viewsolution/14568032) (100 pts) [![image](../img/AC.png)](#) | | [![image](../img/GH.png)](JULY/JULY17/EXPTREE/EXPTREE.py)  [![image](../img/CC.png)](https://www.codechef.com/viewsolution/14541593) (100 pts) [![image](../img/AC.png)](#) |
| [JULY17](https://www.codechef.com/JULY17) | [PSHTTR](https://www.codechef.com/JULY17/problems/PSHTTR) | ★★★★ | | | | |
| [JULY17](https://www.codechef.com/JULY17) | [TWOCOINS](https://www.codechef.com/JULY17/problems/TWOCOINS) | ★★★★ | | | | |
| [JULY17](https://www.codechef.com/JULY17) | [SRVRS](https://www.codechef.com/JULY17/problems/SRVRS) | ★★★★★ | | | | |
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1 change: 1 addition & 0 deletions 2017/JULY/JULY17/CHEFSIGN/CHEFSIGN.cpp
Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,7 @@ using namespace std;

int main() {


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Please undo this change, as it is not part of your PR.

std::ios::sync_with_stdio(false);
int testCases;
cin >> testCases;
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65 changes: 65 additions & 0 deletions 2017/JULY/JULY17/EXPTREE/EXPTREE.cpp
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@@ -0,0 +1,65 @@
// BY: _nishant0208_

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

#define MAX1 1000000007

#define MAX2 1000000009

#define MAX 100001

ll MOD;
ll exponent(ll, ll);
ll modinverse(ll);

int main(){
ll t;
cin >> t;
while(t--){
ll n;
cin >> n;
n--;
ll x, y, temp1, temp2;
MOD = MAX1;
x = ((n % MOD) * ((n + 1) % MOD)) % MOD;
y = (2 * ((2 * n - 1) % MOD)) % MOD;
if(x % 2 == 0 && y % 2 == 0){
x /= 2;
y /= 2;
}
if(x % 3 == 0 && y % 3 == 0){
x /= 3;
y /= 3;
}
temp1 = ((x % MOD) * (modinverse(y))) % MOD;
MOD = MAX2;
x = ((n % MOD) * ((n + 1) % MOD)) % MOD;
y = (2 * ((2 * n - 1) % MOD)) % MOD;
if(x % 2 == 0 && y % 2 == 0){
x /= 2;
y /= 2;
}
if(x % 3 == 0 && y % 3 == 0){
x /= 3;
y /= 3;
}
temp2 = ((x % MOD) * (modinverse(y))) % MOD;
cout << temp1 << " " << temp2 << "\n";
}
return 0;
}

ll exponent(ll a, ll b) {
if(b == 0)
return 1;
ll temp = (exponent(a, b / 2)) % MOD;
temp = (temp * temp) % MOD;
return (b % 2 == 0) ? temp : ((a % MOD) * temp) % MOD;
}

ll modinverse(ll val) {
return exponent(val, MOD - 2);
}
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Add a new line at end.

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@NishantTanwar NishantTanwar Oct 10, 2017

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After which line number?

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at the end of file.