【习题 5-2 UVA-1594】Ducci Sequence
2017-10-14 16:50
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【链接】 我是链接,点我呀:)
【题意】
在这里输入题意
【题解】
map加vector轻松搞定。
【代码】
#include <bits/stdc++.h> using namespace std; typedef vector <int> Vi; Vi v; map <Vi,int> mmap; int n; int main() { //freopen("F:\\rush.txt", "r", stdin); int T; scanf("%d", &T); while (T--) { mmap.clear(); v.clear(); scanf("%d", &n); for (int i = 0; i < n; i++) { int x; scanf("%d", &x); v.push_back(x); } while (!mmap[v]) { mmap[v] = 1; int temp = v[0]; for (int i = 0; i < n-1; i++) v[i] = abs(v[i] - v[i + 1]); v[n - 1] = abs(v[n - 1] - temp); } int zero = 1; for (int i = 0; i < n ; i++) if (v[i] != 0) zero = 0; if (zero) puts("ZERO"); else puts("LOOP"); } return 0; }
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