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author | Nguyễn Gia Phong <mcsinyx@disroot.org> | 2020-06-06 21:33:13 +0700 |
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committer | Nguyễn Gia Phong <mcsinyx@disroot.org> | 2020-06-06 21:33:13 +0700 |
commit | 2f674dc80f0382f1c3178f435714960734dc9d3c (patch) | |
tree | 2abba7e4ec72bd16f58f7375126144d3fd9f4bca /10/CSP-KT2/negpairs.c | |
parent | b2d80610db6beda38573890ed169815e495bc663 (diff) | |
download | cp-2f674dc80f0382f1c3178f435714960734dc9d3c.tar.gz |
Reorganize stuff from secondary school
Diffstat (limited to '10/CSP-KT2/negpairs.c')
-rw-r--r-- | 10/CSP-KT2/negpairs.c | 24 |
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; -} |