1
11
2 1 1 5 1 5 1 5 1 5 1
2 Likes
see i got one mistake that i was doing cnt1++ instead of cnt1=cnt1+v1[i] now i changed it but then also wrong
#include<bits/stdc++.h>
#define ll long long
#define PI 3.14
#define pb push_back
#define pop pop_back
#define MOD 1000000007
#define fi first
#define se second
#define mp make_pair
using namespace std;
int main()
{
ll t,n,v;
cin>>t;
while(t--)
{
ll cnt1=0,cnt2=0;
cin>>n;
vector<ll>v1;
for(int i=0;i<n;i++)
{
cin>>v;
v1.pb(v);
}
if(n==1)
{
cout<<"first"<<endl;
}
else if(n==2)
{
if(v1[0]>v1[1])
{
cout<<"first"<<endl;
}
else if(v1[1]>v1[0])
cout<<"second"<<endl;
else
{
cout<<"draw"<<endl;
}
}
else
{
cnt1=v1[0];
cnt2=v1[1]+v1[2];
for(int i=3;i<v1.size();i++)
{
if(i%2==1)
{
cnt1=cnt1+v1[i];
}
else
cnt2=cnt2+v1[i];
}
if(cnt1==cnt2)
{
cout<<"draw"<<endl;
}
else if(cnt1>cnt2)
{
cout<<"first"<<endl;
}
else
{
cout<<"second"<<endl;
}
}
}
return 0;
}
The answer for the test input:
1
11
2 1 1 5 1 5 1 5 1 5 1
should be second.
3 Likes
how second …here sum of second type=6 first type=22 so first will be answer ?
Read the Editorial 
Hint:
First player gets 13 points; second player gets 15.
4 Likes
#include <bits/stdc++.h>
using namespace std;
int main()
{
int t,n;
cin>>t;
while(t–)
{ cin>>n;
int arr[n], even =0,odd=0;
for(int i=0;i<n;i++)
{
cin>>arr[i];
}
sort(arr,arr+n,greater<int>());
odd += arr[0];
even +=arr[1]+arr[2];
if(n>=3)
{
for(int i =3;i<n;i++)
{
if (i % 2 == 0)
even += arr[i];
else
odd += arr[i];
}
if(even == odd)
cout<<"draw"<<endl;
else if (odd > even)
cout<<"first"<<endl;
else
cout<<"second"<<endl;
}
}
}
please correct me where am I wrong!
//Remeber choose the turns wisely so that P1 wins(we r on P1s side)
string whoWillWin(int n,int a[]){
int P1=0,P2=0;
if(n==1)
P1+=a[0];
if(n==2){
P1+=a[0];
P2+=a[1];
}
if(n>=3){
P1+=a[0];
P2+=a[1];
P2+=a[2];
for(int i=3;i<n;i+=2){
P1+=a[i];
if(i>3)
P2+=a[i-1];
}
}
if(P1>P2)
return "first";
else if(P1<P2)
return "second";
else
return "draw";
}
int main(){
int T;
cin>>T;
for(int i=0;i<T;i++){
int n;
cin>>n;
int a[n];
sort(a,a+n,greater<int>());
for(int j=0;j<n;j++){
cin>>a[j];
}
string st=whoWillWin(n,a);
cout<<st<<endl;
}
return 0;
}
Please Let me know where i am wrong???
//Remeber choose the turns wisely so that P1 wins(we r on P1s side)
string whoWillWin(int n,int a[]){
int P1=0,P2=0;
if(n==1)
P1+=a[0];
if(n==2){
P1+=a[0];
P2+=a[1];
}
if(n>=3){
P1+=a[0];
P2+=a[1];
P2+=a[2];
for(int i=3;i<n;i+=2){
P1+=a[i];
if(i>3)
P2+=a[i-1];
}
}
if(P1>P2)
return "first";
else if(P1<P2)
return "second";
else
return "draw";
}
int main(){
int T;
cin>>T;
for(int i=0;i<T;i++){
int n;
cin>>n;
int a[n];
sort(a,a+n,greater<int>());
for(int j=0;j<n;j++){
cin>>a[j];
}
string st=whoWillWin(n,a);
cout<<st<<endl;
}
return 0;
}
Please let me know where i am wrong???
/* package codechef; // don’t place package name! */
import java.util.Scanner;
import java.lang.;
import java.io.;
/* Name of the class has to be “Main” only if the class is public. */
class Codechef
{
public static void main (String[] args) throws java.lang.Exception
{
Scanner sc=new Scanner(System.in);
int t=sc.nextInt(); //testcase input
int i;
int c1,c2;
while(t>0){
c1=0; c2=0; //chance 1, chance 2
int n=sc.nextInt();
int a[]=new int[n];
for(i=0;i<n;i++){
a[i]=sc.nextInt();
}
c1=c1+a[0];
for(i=3;i<n;i=i+2){
c1=c1+a[i];
}
c2=c2+a[1];
for(i=2;i<n;i=i+2){
c2=c2+a[i];
}
if(c1>c2){
System.out.println(“first”);
}
else if(c1<c2){
System.out.println(“second”);
}
else if(c1==c2){
System.out.println(“draw”);
}
t=t-1;
}
}
}
I am getting a NZEC runtime error, can someone pls tell me what is wrong?
Please either format your code or (better!) link to your submission - the forum software has mangled it and it won’t compile! 
1 Like
Here is the link to my submission
https://www.codechef.com/viewsolution/37374791
And thanks a lot for taking the initiative to check my code.
Consider the test input:
1
1
1
1 Like
Thanks a lot for your help, I could succesfully debug my code.
1 Like
In the for loop starting with i=3 you have incremented cnt1 and cnt2 with 1 … you have to increment both these variables with the vector values like cnt1+=v[i] and cnt2+=v[i]
Thanks …
1 Like
#include
#include <bits/stdc++.h>
using namespace std;
int main() {
int test,n,p1=0,p2=0;
cin>>test;
while(test--){
cin>>n;
int a[n];
for(int i=0;i<n;i++)
cin>>a[i];
sort(a, a + n, greater<int>());
for(int i=0;i<n;i++){
if(i==1||i==2)
p2+=a[i];
else if(i==0||i%2!=0)
p1+=a[i];
else
p2+=a[i];
}
if(p1>p2)
cout<<"first"<<endl;
else if(p2==p1)
cout<<"draw"<<endl;
else if(p2>p1)
cout<<"second"<<endl;
}
// your code goes here
return 0;
}
help please…
#include <stdio.h>
void sort(long a[],int n){
int i,j;
long temp;
for(i=0;i<n-1;i++){
for(j=0;j<n-i-1;j++){
if(a[j]<a[j+1]){
temp = a[j];
a[j] = a[j+1];
a[j+1] = temp;
}
}
}
}
int main(void) {
int t,i;
int n;
long p1,p2;
scanf("%d",&t);
while(t--){
scanf("%d",&n);
long a[10000];
for(i=0;i<n;i++){
scanf("%ld",&a[i]);
}
sort(a,n);
p1=0;
p2=0;
for(i=0;i<n;i++){
if(i%2!=0){
if(i==1)
p2+=a[i];
else
p1+=a[i];
}
else{
if(i==0)
p1+=a[i];
else
p2+=a[i];
}
}
if(p1>p2)
printf("first\n");
else if(p1==p2)
printf("draw\n");
else
printf("second\n");
}
}
Dont know whats wrong , please help
edit- i got it i made silly mistake in the sorting :fp:
hey you didnt checked the n <3
like for input
1
2
1 2
the answer should be 2 but you code says 1
https://www.codechef.com/viewsolution/37842826
kindly help I cant understand which test case my code is failing.