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```floyd warshall::::

#include <bits/stdc++.h>
using namespace std;

#define V 4

#define INF 99999

void printSolution(int dist[][V]);

void floydWarshall(int graph[][V])
{

int dist[V][V], i, j, k;

for (i = 0; i < V; i++)
for (j = 0; j < V; j++)
dist[i][j] = graph[i][j];

for (k = 0; k < V; k++) {

for (i = 0; i < V; i++) {

for (j = 0; j < V; j++) {

if (dist[i][j] > (dist[i][k] + dist[k][j])
&& (dist[k][j] != INF
&& dist[i][k] != INF))
dist[i][j] = dist[i][k] + dist[k][j];
}
}
}

printSolution(dist);
}

void printSolution(int dist[][V])
{
cout << "The following matrix shows the shortest "
"distances"
" between every pair of vertices \n";
for (int i = 0; i < V; i++) {
for (int j = 0; j < V; j++) {
if (dist[i][j] == INF)
cout << "INF"
<< "     ";
else
cout << dist[i][j] << "     ";
}
cout << endl;
}
}

int main()
{

int graph[V][V] = { { 0, 5, INF, 10 },
{ INF, 0, 3, INF },
{ INF, INF, 0, 1 },
{ INF, INF, INF, 0 } };

floydWarshall(graph);
return 0;
}

Bellmanford ;;;;;

#include <bits/stdc++.h>
using namespace std;

struct Edge {
int src, dest, weight;
};

struct Graph {

int V, E;

struct Edge* edge;
};

struct Graph* createGraph(int V, int E)
{
struct Graph* graph = new Graph;
graph->V = V;
graph->E = E;
graph->edge = new Edge[E];
return graph;
}

void printArr(int dist[], int n)
{
printf("Vertex   Distance from Source\n");
for (int i = 0; i < n; ++i)
printf("%d \t\t %d\n", i, dist[i]);
}

void BellmanFord(struct Graph* graph, int src)
{
int V = graph->V;
int E = graph->E;
int dist[V];

for (int i = 0; i < V; i++)
dist[i] = INT_MAX;
dist[src] = 0;

for (int i = 1; i <= V - 1; i++) {
for (int j = 0; j < E; j++) {
int u = graph->edge[j].src;
int v = graph->edge[j].dest;
int weight = graph->edge[j].weight;
if (dist[u] != INT_MAX
&& dist[u] + weight < dist[v])
dist[v] = dist[u] + weight;
}
}

for (int i = 0; i < E; i++) {
int u = graph->edge[i].src;
int v = graph->edge[i].dest;
int weight = graph->edge[i].weight;
if (dist[u] != INT_MAX
&& dist[u] + weight < dist[v]) {
printf("Graph contains negative weight cycle");
return;
}
}

printArr(dist, V);

return;
}

int main()
{

int V = 5;
int E = 8;
struct Graph* graph = createGraph(V, E);

graph->edge[0].src = 0;
graph->edge[0].dest = 1;
graph->edge[0].weight = -1;

graph->edge[1].src = 0;
graph->edge[1].dest = 2;
graph->edge[1].weight = 4;

graph->edge[2].src = 1;
graph->edge[2].dest = 2;
graph->edge[2].weight = 3;

graph->edge[3].src = 1;
graph->edge[3].dest = 3;
graph->edge[3].weight = 2;

graph->edge[4].src = 1;
graph->edge[4].dest = 4;
graph->edge[4].weight = 2;

graph->edge[5].src = 3;
graph->edge[5].dest = 2;
graph->edge[5].weight = 5;

graph->edge[6].src = 3;
graph->edge[6].dest = 1;
graph->edge[6].weight = 1;

graph->edge[7].src = 4;
graph->edge[7].dest = 3;
graph->edge[7].weight = -3;

BellmanFord(graph, 0);

return 0;
}
```