Internet connection

// #include <bits/stdc++.h>
#include <iostream> 
#include <limits> 
#include <cstring>
#include <queue> 
using namespace std;
#define V 100
// int M[100][100];
unsigned long R[100][100];
bool bfs(unsigned long R[V][V], int s, int t, int parent[]) {
    queue<int> q;
    vector<bool> vis(V);
    q.push(s);
    memset(parent, 0, sizeof(int) * (t + 1));
    while(!q.empty()) {
        int u = q.front();
        q.pop();
        // aceck around
        vis[u] = true;
        for (int v=0; v< (t + 1); v++) 
        {
            //std::cout << vis[v] << " " << u << " " << v << " " << R[u][v] << std::endl;
            if (vis[v] == false && R[u][v] > 0) 
            { 
                q.push(v); 
                parent[v] = u;
                //std::cout << v << " " << u << std::endl;
            }
        }
    }
    //cout << "visited " << vis[t] << endl;
    return (vis[t] == true); 
}
// Returns the maximum flow from s to t in the given graph 
int max_flow(unsigned long R[V][V], int s, int t) 
{ 
    int u, v; 
  
    int parent[V];  // This array is filled by BFS and to store path 
  
    int max_flow = 0;  // There is no flow initially 
  
    // Augment the flow while tere is path from source to sink 
    while (bfs(R, s, t, parent)) 
    { 
        // Find minimum residual capacity of the edges along the 
        // path filled by BFS. Or we can say find the maximum flow 
        // through the path found. 
        unsigned long path_flow = std::numeric_limits<unsigned long>::max(); 

        for (v=t; v!=s; v=parent[v]) 
        { 
            u = parent[v]; 
            path_flow = min(path_flow, R[u][v]); 
            //cout << path_flow << endl;
        } 
  
        for (v=t; v != s; v=parent[v]) 
        { 
            u = parent[v]; 
            R[u][v] -= path_flow; 
            R[v][u] += path_flow; 
            
        } 
  
        // Add path flow to overall flow 
        max_flow += path_flow; 
    } 
  
    // Return the overall flow 
    return max_flow; 
} 
int main() {
    int n, m;
    cin >> n >> m;
    // memset(M, 0, sizeof(int) * 100 * 100);
    memset(R, 0, sizeof(unsigned long) * 100 * 100);
    for (int i=0; i<m; i++) {
        int a, b, w;
        cin >> a >> b >> w;
        // M[a-1][b-1] = w;
        R[a-1][b-1] = w;
    }
    cout << max_flow(R, 0, n - 1);
}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: ACCEPTED

Test 6

Verdict: WRONG ANSWER

Test 7

Verdict: WRONG ANSWER

Test 8

Verdict: WRONG ANSWER

Test 9

Verdict: WRONG ANSWER

Test 10

Verdict: WRONG ANSWER

Test 11

Verdict: ACCEPTED

Test 12

Verdict: ACCEPTED

Test 13

Verdict: ACCEPTED

Test 14

Verdict: ACCEPTED

Test 15

Verdict: ACCEPTED

Test 16

Verdict: ACCEPTED

Test 17

Verdict: ACCEPTED

Test 18

Verdict: WRONG ANSWER

Test 19

Verdict: ACCEPTED

Test 20

Verdict: ACCEPTED

Test 21

Verdict: ACCEPTED

Test 22

Verdict: ACCEPTED