Submission #272123

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
272123	2020-08-18 09:26:06	brcode	Railway (BOI17_railway)	C++14	0 / 100	64 ms	94328 KiB

railway

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#include <iostream>
#include <bits/stdc++.h>
using namespace std;
const int MAXN = 1e6+5;
int n,m,k;
int arr[MAXN];
int tmp[MAXN];
bool blocked[MAXN];
int h[MAXN];
vector<int> tosub[MAXN];
int dp[MAXN][32];
set<int> s1[MAXN];
int p[MAXN];
int sz[MAXN];
vector<int> res;
map<pair<int,int>,int> m2;
vector<int> v1[MAXN];
map<int,int> m1;
int side1;
int hold;
void dfs(int curr,int par){
    int edgenum = -1;
    if(curr!=par){
        edgenum = m2[make_pair(curr,par)];
    }
    int ind = curr;
    for(auto x:v1[curr]){
        if(x!=par){
            dfs(x,curr);
 
 
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Compilation message (stderr)

railway.cpp: In function 'void dfs(int, int)':
railway.cpp:51:22: warning: comparison of integer expressions of different signedness: 'std::set<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   51 |     if(s1[ind].size()>=k && edgenum!=-1){
      |        ~~~~~~~~~~~~~~^~~
railway.cpp: In function 'int main()':
railway.cpp:99:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   99 |     freopen("input.txt", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
railway.cpp:101:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
  101 |     freopen("output.txt", "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 8
• Subtask 2: 0 / 15
• Subtask 3: 0 / 7
• Subtask 4: 0 / 29
• Subtask 5: 0 / 16
• Subtask 6: 0 / 25