Discussion @ 1880. Psych Up's Eigenvalues @ Timus Online Judge

Posted by Baz 5 Nov 2011 20:23

#include <cstdio>
#include <map>

std :: map<int, int> a;
int ans = 0, n, c;

int main() {
        while (scanf("%d", &n) == 1)
                for (; n; n--)
                        scanf("%d", &c), ans += ++a[c] == 3;
        printf("%d", ans);
}

Edited by author 05.11.2011 20:31

Re: AC

Posted by HaiyangZheng 29 Sep 2012 22:08

can you explain the function/name "map" ?
which language used in code above?

Re: AC

Posted by sysu2012zzp 14 Nov 2012 16:58

map is in C++ STL and it is like a binary search tree.

Re: AC

Posted by Egor Stepanov 13 Dec 2012 00:28

amazing solve!!

Discussion of Problem 1880. Psych Up's Eigenvalues