Submission #207563

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
207563	2020-03-08 04:01:10	quocnguyen1012	Designated Cities (JOI19_designated_cities)	C++14	100 / 100	428 ms	35064 KiB

designated_cities

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#include <bits/stdc++.h>
#define fi first
#define se second
#define mp make_pair
#define pb push_back
#define eb emplace_back
using namespace std;
typedef long long ll;
const int maxn = 2e5 + 5;
class Edge
{
public:
  int v, c, d;
  Edge(int v, int c, int d):
    v(v), c(c), d(d) {}
};
vector<Edge> adj[maxn];
int N, M, deg[maxn];
ll res[maxn], sum[maxn];
void prepare(int u, int p = -1)
{
  for(auto v : adj[u]) if(v.v != p){
    prepare(v.v, u);
    sum[u] += v.c + sum[v.v];
  }
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

designated_cities.cpp: In function 'int main()':
designated_cities.cpp:45:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
     freopen("A.INP", "r", stdin);
     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~
designated_cities.cpp:46:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
     freopen("A.OUT", "w", stdout);
     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 6 / 6
• Subtask 2: 7 / 7
• Subtask 3: 9 / 9
• Subtask 4: 17 / 17
• Subtask 5: 17 / 17
• Subtask 6: 44 / 44