結果
問題 | No.812 Change of Class |
ユーザー | Zhendong Jia |
提出日時 | 2019-04-12 22:26:40 |
言語 | C++11 (gcc 13.3.0) |
結果 |
AC
|
実行時間 | 100 ms / 4,000 ms |
コード長 | 2,498 bytes |
コンパイル時間 | 1,927 ms |
コンパイル使用メモリ | 89,912 KB |
実行使用メモリ | 7,512 KB |
最終ジャッジ日時 | 2024-06-12 19:09:40 |
合計ジャッジ時間 | 5,572 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge5 |
(要ログイン)
ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 60 |
コンパイルメッセージ
main.cpp: In function ‘int main(int, char**)’: main.cpp:103:12: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result] 103 | scanf("%d%d", &p, &q); | ~~~~~^~~~~~~~~~~~~~~~ main.cpp:115:10: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result] 115 | scanf("%d", &q); | ~~~~~^~~~~~~~~~ main.cpp:117:12: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result] 117 | scanf("%d", &p); | ~~~~~^~~~~~~~~~
ソースコード
#include <assert.h> #include <ctype.h> #include <float.h> #include <limits.h> #include <math.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <sys/types.h> #include <algorithm> #include <bitset> #include <complex> #include <iostream> #include <list> #include <map> #include <numeric> #include <queue> #include <set> #include <sstream> #include <stack> #include <string> #include <unordered_map> #include <unordered_set> #include <vector> using namespace std; #define SZ(a) (int)(a).size() #define FOR(i,a,b) for (int i=(a); i<=(b); ++i) #define REP(i,n) for (int i=0; i<(n); ++i) #define ALL(c) c.begin(), c.end() #define CLR(c,n) memset(c, n, sizeof(c)) #define MCPY(d, s) memcpy(d, s, sizeof(d)) #define TR(it, c) for (auto it = c.begin();it != c.end(); ++it) #define CONTAIN(it, c) (c.find(it) != c.end()) typedef vector<int> VI; typedef pair<int, int> PII; template <class T> void checkmin(T &a, T b) { if (b<a) a=b; } template <class T> void checkmax(T &a, T b) { if (b>a) a=b; } typedef long long LL; const int INF=0x3F3F3F3F; const int N=100000, M=N*2; int n, m; int head[N], dst[M], nxt[M]; int deg[N]; int c[N], ccnt[N], nc; int q[N], d[N]; void add_edge(int u, int v, int id) { dst[id] = v; nxt[id] = head[u]; head[u] = id; ++deg[u]; } void fill(int root) { int qa = 0, qe = 0; q[qe++] = root; c[root] = nc; while (qa < qe) { root = q[qa++]; for (int i = head[root]; i >= 0; i = nxt[i]) { int d = dst[i]; if (c[d] >= 0) continue; c[d] = nc; q[qe++] = d; } } ccnt[nc] = qe; } int bfs(int root) { CLR(d, -1); d[root] = 0; int qa = 0, qe = 0; q[qe++] = root; if (head[root] < 0) return 0; while (qa < qe) { root = q[qa++]; for (int i = head[root]; i >= 0; i = nxt[i]) { int dest = dst[i]; if (d[dest] >= 0) continue; d[dest] = d[root] + 1; q[qe++] = dest; } } int dist = d[q[qe-1]], day = 0, md = 1; while (md < dist) { md *= 2; ++day; } return day; } int main(int argc, char *argv[]) { int p, q; while (scanf("%d%d", &n, &m) == 2) { CLR(head, -1); CLR(deg, 0); REP(i, m) { scanf("%d%d", &p, &q); --p; --q; add_edge(p, q, i*2); add_edge(q, p, i*2+1); } CLR(c, -1); CLR(ccnt, 0); nc = 0; REP(i, n) if(c[i] == -1) { fill(i); ++nc; } scanf("%d", &q); REP(i, q) { scanf("%d", &p); --p; printf("%d %d\n", ccnt[c[p]] - 1, bfs(p)); } } }