比赛 |
20150422 |
评测结果 |
AAAAAAAAAAA |
题目名称 |
背驮式行走 |
最终得分 |
100 |
用户昵称 |
Asm.Def |
运行时间 |
0.099 s |
代码语言 |
C++ |
内存使用 |
1.68 MiB |
提交时间 |
2015-04-22 08:51:23 |
显示代码纯文本
#include <cstdio>
#include <cstring>
#include <cstdlib>
#include <ctime>
#include <cctype>
#include <algorithm>
#include <cmath>
using namespace std;
//#define USEFREAD
#ifdef USEFREAD
#define InputLen 5000000
char *ptr=(char *)malloc(InputLen);
#define getc() (*(ptr++))
#else
#define getc() (getchar())
#endif
#define SetFile(x) (freopen(#x".in", "r", stdin), freopen(#x".out", "w", stdout))
template<class T>inline void getd(T &x){
int ch = getc();bool neg = false;
while(!isdigit(ch) && ch != '-')ch = getc();
if(ch == '-')ch = getc(), neg = true;
x = ch - '0';
while(isdigit(ch = getc()))
x = x * 10 - '0' + ch;
if(neg)x = -x;
}
/***********************************************************************/
const int maxn = 40005;
typedef long long LL;
int B, E, P, N, M;
#include <vector>
#include <queue>
vector<int> adj[maxn];
int vis[3][maxn], dis[3][maxn];
inline void BFS(int id, int cur){
static queue<int> Q;
Q.push(cur);vis[id][cur] = true;
int t, *dist = dis[id];
vector<int>::iterator it;
while(!Q.empty()){
t = Q.front();Q.pop();
int d = dist[t];
for(it = adj[t].begin();it != adj[t].end();++it)if(!vis[id][*it]){
dist[*it] = d + 1;
vis[id][*it] = true;
Q.push(*it);
}
}
}
inline void init(){
getd(B), getd(E), getd(P), getd(N), getd(M);
int a, b;
while(M--){
getd(a), getd(b);
adj[a].push_back(b);
adj[b].push_back(a);
}
BFS(0, 1);BFS(1, 2);BFS(2, N);
}
int main(){
#ifdef DEBUG
freopen("test.txt", "r", stdin);
#else
SetFile(piggyback);
#endif
#ifdef USEFREAD
fread(ptr,1,InputLen,stdin);
#endif
LL ans = 0x7fffffffffffffffll, tmp;
init();
for(int i = 1;i <= N;++i){
tmp = 0;
tmp += B * dis[0][i];
tmp += E * dis[1][i];
tmp += P * dis[2][i];
ans = min(tmp, ans);
}
printf("%lld\n", ans);
#ifdef DEBUG
printf("\n%.3lf sec \n", (double)clock() / CLOCKS_PER_SEC);
#endif
return 0;
}