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authorNguyễn Gia Phong <mcsinyx@disroot.org>2020-06-06 21:33:13 +0700
committerNguyễn Gia Phong <mcsinyx@disroot.org>2020-06-06 21:33:13 +0700
commit2f674dc80f0382f1c3178f435714960734dc9d3c (patch)
tree2abba7e4ec72bd16f58f7375126144d3fd9f4bca /10/CSP-KT2/negpairs.c
parentb2d80610db6beda38573890ed169815e495bc663 (diff)
downloadcp-2f674dc80f0382f1c3178f435714960734dc9d3c.tar.gz
Reorganize stuff from secondary school
Diffstat (limited to '10/CSP-KT2/negpairs.c')
-rw-r--r--10/CSP-KT2/negpairs.c24
1 files changed, 0 insertions, 24 deletions
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 <stdio.h>
-
-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;
-}