oliver codechef
int sum=0,k=1,times=0;
for(int i=1;i<=n;i++){
sum=sum+k,times++;
if(times==k)times=0,k++;
}oliver codechef
int sum=0,k=1,times=0;
for(int i=1;i<=n;i++){
sum=sum+k,times++;
if(times==k)times=0,k++;
}Copyright © 2021 Codeinu
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