UVA - 524 Prime Ring Problem Time Limit:3000MS Memory Limit:0KB 64bit IO Format:%lld & %llu Description A ring is composed of n (even number) circles as shown in diagram. Put natural numbers into each circle separately, and the sum of number…
还是数独.. 比上一个多了个分数矩阵,其实没什么差别,但是数据好像水了许多... #include <bits/stdc++.h> #define INF 0x3f3f3f3f using namespace std; typedef long long ll; inline int lowbit(int x){ return x & (-x); } inline int read(){ int X = 0, w = 0; char ch = 0; while(!isdigit(ch)…
Description A ring is composed of n (even number) circles as shown in diagram. Put natural numbers 1,2,3,...,n into each circle separately, and the sum of numbers in two adjacent circles should be a prime. Note: the number of first circle should al…
#include <bits/stdc++.h> #define searchnext(x, y) y == 9 ? search(x + 1, 1) : search(x, y + 1) using namespace std; long long ans = 0; int a[10][10]; void search(int, int); void calc() { long long tmp = 0; for (int i = 1; i <= 9; i++) { for (int…