Submission #2763728

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Source Code Expand

#include<iostream>
#include<vector>
#include<queue>
#include<stack>
#include<string>
#include<cmath>
#include<algorithm>
#include<bitset>
#include<map>
#include<functional>
#include<set>
#include<numeric>

#pragma region
using namespace std;
#define FOR(i,r,n) for(ll i = (ll)(r); i < (ll)(n); i++)
#define rep(i,n) FOR(i,0,n)
#define RFOR(i,r,n) for(ll i=(ll)(n-1);i>=r;i--)
#define rrep(i,n) RFOR(i,0,n)
#define all(x) x.begin(),x.end()
#define rall(x) x.rbegin(),x.rend()
#define COUNT(a,x)  upper_bound(all(a), x) - lower_bound(all(a), x)
#define MCOUNT(a,x,y) upper_bound(all(a), y) - lower_bound(all(a), x)
#define UNIQUE(a) sort(all(a)); a.erase(unique(all(a)), a.end())
#define SUM(a) accumulate(all(a),0)
#define scan(x) scanf("%lld",&x)
#define pb push_back
typedef long long int ll;
typedef vector<ll> vll;
typedef vector<vll> vvll;
typedef pair<ll, ll> pll;
typedef vector<pll> vpll;
typedef vector<string> vs;
typedef map<ll, ll> MAP;
typedef set<ll> SET;
typedef double D;
const ll inf = 5555555555555555555;
const ll mod = 1000000007;
const D pi = acos(-1);
const D eps = 1e-10;

ll n = 0, m = 0, ans = 0, sum = 0, cnt = 0, tmp = 0, ma = -inf, mi = inf;
string s;
bool ok, flag;
ll dx[5] = { 1,-1,0,0,0 }, dy[5] = { 0,0,1,-1,0 };
ll ddx[9] = { 1,-1,0,0,1,1,-1,-1,0 }, ddy[9] = { 0,0,1,-1,1,-1,1,-1,0 };
#pragma endregion
#define MAX 111111

ll x[111], y[111];
int main(void) {
  cin >> n;
  rep(i, n) {
	scan(x[i]);
	scan(y[i]);
  }

  rep(i, n) FOR(j, i + 1, n) FOR(k, j + 1, n) {
	ll x1 = x[j] - x[i];
	ll x2 = x[k] - x[i];
	ll y1 = y[j] - y[i];
	ll y2 = y[k] - y[i];
	tmp = abs(x1*y2 - y1 * x2);
	if (tmp % 2 == 0 && tmp > 0) ans++;
  }

  cout << ans << endl;

  return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:54:12: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scan(x[i]);
            ^
./Main.cpp:55:12: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scan(y[i]);
            ^

Judge Result