Submission #130425

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
130425	2019-07-15 07:49:17	win11905	Railway (BOI17_railway)	C++11	100 / 100	172 ms	21872 KiB

railway

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#include <bits/stdc++.h>
using namespace std;
#define pii pair<int, int>
#define x first
#define y second
const int N = 1e5+5;
int n, m, k;
int in[N], out[N], sz[N], pos[N], idx[N];
vector<pii> g[N];
vector<int> node[N];
int szn[N], cnt[N], ans;
int rans[N];
void dfs(int u, int p) {
    static int ptr = 0;
    in[u] = ++ptr, pos[ptr] = u, sz[u] = 1;
    if(p) for(auto it = g[u].begin(); it != g[u].end(); ++it) if(it->x == p) { g[u].erase(it); break; }
    for(auto &v : g[u]) {
        idx[v.x] = v.y;
        dfs(v.x, u);
        sz[u] += sz[v.x];
        if(sz[v.x] > sz[g[u][0].x]) swap(v, g[u][0]);
    } 
    out[u] = ptr;
}
void add(int x) {
 
 
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Compilation message (stderr)

railway.cpp: In function 'int main()':
railway.cpp:70:28: warning: format '%d' expects argument of type 'int', but argument 2 has type 'std::vector<int>::size_type {aka long unsigned int}' [-Wformat=]
     printf("%d\n", A.size());
                    ~~~~~~~~^
railway.cpp:53:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d %d", &n, &m, &k);
     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
railway.cpp:55:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d %d", &u, &v);
         ~~~~~^~~~~~~~~~~~~~~~~
railway.cpp:60:21: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         int q; scanf("%d", &q);
                ~~~~~^~~~~~~~~~
railway.cpp:63:25: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
             int v; scanf("%d", &v);
                    ~~~~~^~~~~~~~~~

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