CSES - HIIT Open 2017 - Results
Submission details
Task:Algorithm
Sender:Ace of Spades
Submission time:2017-05-27 11:15:59 +0300
Language:C++
Status:READY
Result:ACCEPTED
Test results
testverdicttime
#1ACCEPTED0.06 sdetails
#2ACCEPTED0.04 sdetails
#3ACCEPTED0.04 sdetails
#4ACCEPTED0.05 sdetails
#5ACCEPTED0.06 sdetails
#6ACCEPTED0.04 sdetails
#7ACCEPTED0.05 sdetails
#8ACCEPTED0.04 sdetails
#9ACCEPTED0.06 sdetails
#10ACCEPTED0.04 sdetails
#11ACCEPTED0.05 sdetails
#12ACCEPTED0.05 sdetails
#13ACCEPTED0.05 sdetails
#14ACCEPTED0.06 sdetails
#15ACCEPTED0.05 sdetails
#16ACCEPTED0.06 sdetails
#17ACCEPTED0.04 sdetails
#18ACCEPTED0.06 sdetails
#19ACCEPTED0.07 sdetails
#20ACCEPTED0.06 sdetails

Code

#include<iostream>

using namespace std;

int main(void) 
{
    int64_t n;
    cin >> n;

    int64_t res = 0;
    for (int64_t a = 1; a <= n; ++a) {
	res += n*(n+1)/2 - a*(a-1)/2 - (n-a+1)*(a - 1);
    }
    cout << res << '\n';

    return 0;

}

Test details

Test 1

Verdict: ACCEPTED

input
1

correct output
1

user output
1

Test 2

Verdict: ACCEPTED

input
2

correct output
4

user output
4

Test 3

Verdict: ACCEPTED

input
3

correct output
10

user output
10

Test 4

Verdict: ACCEPTED

input
4

correct output
20

user output
20

Test 5

Verdict: ACCEPTED

input
5

correct output
35

user output
35

Test 6

Verdict: ACCEPTED

input
263528

correct output
3050239857553560

user output
3050239857553560

Test 7

Verdict: ACCEPTED

input
630093

correct output
41693157083373415

user output
41693157083373415

Test 8

Verdict: ACCEPTED

input
108426

correct output
212452122723676

user output
212452122723676

Test 9

Verdict: ACCEPTED

input
407203

correct output
11253428501536410

user output
11253428501536410

Test 10

Verdict: ACCEPTED

input
798489

correct output
84851044799375085

user output
84851044799375085

Test 11

Verdict: ACCEPTED

input
699773

correct output
57111314541226175

user output
57111314541226175

Test 12

Verdict: ACCEPTED

input
535193

correct output
25549503060424365

user output
25549503060424365

Test 13

Verdict: ACCEPTED

input
951724

correct output
143675653860541900

user output
143675653860541900

Test 14

Verdict: ACCEPTED

input
997759

correct output
165549173593263040

user output
165549173593263040

Test 15

Verdict: ACCEPTED

input
368832

correct output
8362537201182784

user output
8362537201182784

Test 16

Verdict: ACCEPTED

input
497882

correct output
20569827174211084

user output
20569827174211084

Test 17

Verdict: ACCEPTED

input
235672

correct output
2181615649088424

user output
2181615649088424

Test 18

Verdict: ACCEPTED

input
721959

correct output
62717416230802340

user output
62717416230802340

Test 19

Verdict: ACCEPTED

input
328943

correct output
5932184601121240

user output
5932184601121240

Test 20

Verdict: ACCEPTED

input
779320

correct output
78885627953685640

user output
78885627953685640