oj.uz

Submission #901892

# Submission time Handle Problem Language Result Execution time Memory
901892 2024-01-10T03:13:32 Z Iwantbemaster Star triangles (IZhO11_triangle) C++17
100 / 100
 254 ms 20404 KB 
	#include <bits/stdc++.h>
	using namespace std;
	#define int long long
	#define ff first
	#define ss second
	#pragma GCC optimize("Ofast","inline","-ffast-math")
	main(){
		int n, ans = 0; cin >> n; map<int, int> x, y;
		vector<pair<int, int>> res;
		for(int i = 0; i < n; i++){
			int x1, y1; cin >> x1 >> y1;
			x[x1]++, y[y1]++; res.emplace_back(x1, y1);
		} for(auto p : res) ans += (x[p.ff]-1) * (y[p.ss]-1);
		cout << ans;
	}
	const int fastIO = [](){
		ios_base::sync_with_stdio(false);
		cin.tie(nullptr); cout.tie(nullptr);
		return 0;
	}();
	//  - 32 !- 33 "- 34 #- 35 $- 36 %- 37 &- 38 '- 39 (- 40 )- 41 *- 42 +- 43 ,- 44 -- 45 .- 46 /- 47 
	// 0- 48 1- 49 2- 50 3- 51 4- 52 5- 53 6- 54 7- 55 8- 56 9- 57 :- 58 ;- 59 <- 60 =- 61 >- 62 ?- 63 
	// @- 64 A- 65 B- 66 C- 67 D- 68 E- 69 F- 70 G- 71 H- 72 I- 73 J- 74 K- 75 L- 76 M- 77 N- 78 O- 79 
	// P- 80 Q- 81 R- 82 S- 83 T- 84 U- 85 V- 86 W- 87 X- 88 Y- 89 Z- 90 [- 91 \- 92 ]- 93 ^- 94 _- 95 
	// `- 96 a- 97 b- 98 c- 99 d-100 e-101 f-102 g-103 h-104 i-105 j-106 k-107 l-108 m-109 n-110 o-111 
	// p-112 q-113 r-114 s-115 t-116 u-117 v-118 w-119 x-120 y-121 z-122 {-123 |-124 }-125 ~-126 -127

Compilation message

triangle.cpp:7:2: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
    7 |  main(){
      |  ^~~~

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 456 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 7 ms 1312 KB Output is correct
13 Correct 7 ms 1372 KB Output is correct
14 Correct 8 ms 1752 KB Output is correct
15 Correct 87 ms 7872 KB Output is correct
16 Correct 94 ms 8380 KB Output is correct
17 Correct 88 ms 7872 KB Output is correct
18 Correct 85 ms 7872 KB Output is correct
19 Correct 253 ms 19364 KB Output is correct
20 Correct 167 ms 13204 KB Output is correct
21 Correct 254 ms 19364 KB Output is correct
22 Correct 250 ms 20404 KB Output is correct