Submission #164614

#	Time	Username	Problem	Language	Result	Execution time	Memory
164614		AKaan37	별들과 삼각형 (IZhO11_triangle)	C++17	100 / 100	563 ms	15608 KiB

triangle

//Sani buyuk Osman Pasa Plevneden cikmam diyor.
//FatihSultanMehmedHan
//Abdulhamid Han
//Bismillahirrahmanirrahim
//█▀█─█──█──█▀█─█─█
//█▄█─█──█──█▄█─█▄█
//█─█─█▄─█▄─█─█─█─█
 
#pragma GCC optimize ("O3")
#pragma GCC target ("sse4")
 
#include <bits/stdc++.h>
 
using namespace std;
 
typedef long long lo;
typedef pair< lo,lo > PII;
 
#define fi first
#define se second
#define mp make_pair
#define pb push_back
#define fio() ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL)
#define FOR for(lo i=1;i<=n;i++)
#define mid ((start+end)/2)
#define ort ((bas+son)/2)
 
const lo MAX = -1000000000000000000;
const lo MIN = 1000000000000000000;
const lo inf = 1000000000;
const lo KOK = 100000;
const lo LOG = 30;
const lo li = 500005;
const lo mod = 1000000007;
 
lo n,m,b[li],a[li],k,flag,t,x[li],y[li];
lo cev;
string s;
map<lo,lo> xk,yk;
vector<lo> v;
 
int main(void){
	//~ freopen("triangles.in","r",stdin);
	//~ freopen("triangles.out","w",stdout);
	scanf("%lld",&n);
	FOR{
		scanf("%lld %lld",&x[i],&y[i]);
		xk[x[i]]++;yk[y[i]]++;
	}
	FOR{
		cev+=(xk[x[i]]-1)*(yk[y[i]]-1);
	}
	printf("%lld\n",cev);
	return 0;
}

Compilation message (stderr)

triangle.cpp: In function 'int main()':
triangle.cpp:45:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%lld",&n);
  ~~~~~^~~~~~~~~~~
triangle.cpp:47:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%lld %lld",&x[i],&y[i]);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 100 / 100