#include<cstdio> #include<cstring> #include<algorithm> using namespace std; #define inf 0x3f3f3f3f const int maxn = 502; int t, n, m, w, x, y, z; int mp[maxn][maxn]; bool floyd() { for (int k = 1; k <= n; k++)
1.定义概览 Floyd-Warshall算法(Floyd-Warshall algorithm)是解决任意两点间的最短路径的一种算法,可以正确处理有向图或负权的最短路径问题,同时也被用于计算有向图的传递闭包。Floyd-Warshall算法的时间复杂度为O(N3),空间复杂度为O(N2)。 2.算法描述 1)算法思想原理... ...
Floyd 判圈算法(Floyd's Cycle-Finding Algorithm) Floyd 判圈算法(又称 龟兔赛跑算法)用于检测链表中是否存在环,并找到环的入口节点、环长度。 时间复杂度 O(n),空间复杂度 O(1)。 算法步骤 (1) 检测是否有环(快慢指针相遇) 初始化:slow和fast指...
#include <iostream> #include <algorithm> #include <cstdio> #include <cstring> #include <vector> #include #include <stack> using namespace std; const int INF = 0x3f3f3f3f; const int MAXN = 110; int n, m; // n:节点个数, m:边的个数 int g[MAXN][MAXN]; // 无向图 int di...
Sideri. On the Floyd-Warshall Algorithm for Logic Programs. The Journal of Logic Programming, Vol. 41, 1999.Papadimitriou, C. H. and Sideri, M.: On the Floyd-Warshall Algorithm for Logic Programs, J. Log. Program., Vol. 41,No. 1(1999), pp. 129-137....
6*/7#include <cstdio>8#include <cmath>9#include <algorithm>10#include <vector>11#include <cstring>12usingnamespacestd;1314constintinf =99999999;15constintmaxn =1010;16inte[maxn][maxn], suc[maxn][maxn], b[maxn];17intn;18voidFloyd();1920intmain()21{22while(scanf("%d", &n) ...
If there is only one duplicate * number in the input array, this algorithm returns the duplicate number in * O(1) space and the time complexity is less than O(n^2) without modifying the * original array, otherwise, it returns -1. * @author [Swastika Gupta](https://github.com/Swast...
#include<cstdio>#include<algorithm>#include<cstring>#include<vector>usingnamespacestd;constintmaxn=300+10;intans=0x3f3f3f3f;inta[maxn][maxn],d[maxn][maxn],pos[maxn][maxn]; vector<int>path;voidgetpath(intx,inty){if(pos[x][y]==0)return; ...
Program: #include<iostream> #include<algorithm> #include<stdio.h> #include<string.h> #include<math.h> #include<queue> #define MAXN 2005 #define MAXM 20000005 #define oo 1000000007 #define ll long long usingnamespacestd; structDinic
#include <algorithm> #include <vector> #include #include <string> #include <set> #include <ctime> #include <cmath> #include <cctype> using namespace std; #define maxn 600 #define INF 1e9 #define LLINF 1LL<<60 #define LL long long int cas...