Summa

input/code.cpp: In function 'int main()':
input/code.cpp:36:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0; i<qaq.size(); i++) {
               ~^~~~~~~~~~~
input/code.cpp:37:11: warning: unused variable 'u' [-Wunused-variable]
  for(auto u:qaq[i])
           ^

#include <bits/stdc++.h>
#define ll long long
#define ull unsigned long long
#define ld long double
#define N (1<<18)
#define M 1000000007

using namespace std;

int n,ans;

int main() {
	cin.tie(0);
	cout.tie(0);
	ios_base::sync_with_stdio(0);
	cin >> n;
	vector<vector<int>> qaq;
	for(int i=1; i<=1000; i++) {
		for(int j=1; j<=1000; j++) {
				if(i==j)
				continue;
			if(n-i-j==i || n-i-j==j)
			continue;
			vector<int> v;
			v.push_back(i);
			v.push_back(j);
			v.push_back(n-i-j);
			if(n-i-j>0) {
				sort(v.begin(), v.end());
				qaq.push_back(v);
			}

		}
	}
	sort(qaq.begin(), qaq.end());
	for(int i=0; i<qaq.size(); i++) {
	for(auto u:qaq[i])
		if(i == 0 || qaq[i-1] != qaq[i])
			ans++;
	}
	cout << ans;
}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: ACCEPTED

Test 6

Verdict: WRONG ANSWER

Test 7

Verdict: WRONG ANSWER

Test 8

Verdict: WRONG ANSWER

Test 9

Verdict: WRONG ANSWER

Test 10

Verdict: WRONG ANSWER

Test 11

Verdict: WRONG ANSWER

Test 12

Verdict: WRONG ANSWER

Test 13

Verdict: WRONG ANSWER

Test 14

Verdict: WRONG ANSWER

Test 15

Verdict: WRONG ANSWER

Test 16

Verdict: WRONG ANSWER

Test 17

Verdict: WRONG ANSWER

Test 18

Verdict: WRONG ANSWER

Test 19

Verdict: WRONG ANSWER

Test 20

Verdict: WRONG ANSWER

Test 21

Verdict: WRONG ANSWER

Test 22

Verdict: WRONG ANSWER

Test 23

Verdict: WRONG ANSWER

Test 24

Verdict: WRONG ANSWER

Test 25

Verdict: WRONG ANSWER

Test 26

Verdict: WRONG ANSWER

Test 27

Verdict: WRONG ANSWER

Test 28

Verdict: WRONG ANSWER