From 2f674dc80f0382f1c3178f435714960734dc9d3c Mon Sep 17 00:00:00 2001 From: Nguyễn Gia Phong Date: Sat, 6 Jun 2020 21:33:13 +0700 Subject: Reorganize stuff from secondary school --- 10/CSP-KT2/negpairs.c | 24 ------------------------ 1 file changed, 24 deletions(-) delete mode 100644 10/CSP-KT2/negpairs.c (limited to '10/CSP-KT2/negpairs.c') diff --git a/10/CSP-KT2/negpairs.c b/10/CSP-KT2/negpairs.c deleted file mode 100644 index 577fdf8..0000000 --- a/10/CSP-KT2/negpairs.c +++ /dev/null @@ -1,24 +0,0 @@ -#include - -int main() -{ - long n, i; - long unsigned_a[201] = {}; - long *a = &unsigned_a[100]; - char a0; - long long v; - - scanf("%ld", &n); - for (i = 0; i < n; i++) { - scanf("%hhd", &a0); - a[a0]++; - } - - v = a[0] * (a[0] - 1) / 2; - for (i = 1; i <= 100; i++) - v += a[i] * a[-i]; - - printf("%lld\n", v); - - return 0; -} -- cgit 1.4.1