标签:mit script int col mod tween color case cal
传送门:http://acm.hdu.edu.cn/showproblem.php?pid=6343
Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 262144/262144 K (Java/Others)
Total Submission(s): 1536 Accepted Submission(s): 830
题意概括:
给出每个点的权值,点与点之间的距离等于 √| wi-wj | ,求起点到终点的最短距离。
解题思路:
一道伪装成图论的水题。
最短距离就是两点距离,因为如果中间放入其他点来进行更新路径是不会获得更短的路径的。
因为 √a + √b > √(a+b) ;
AC code:
1 #include<cstdio> 2 #include<algorithm> 3 #include<iostream> 4 #include<cstring> 5 #include<vector> 6 #include<queue> 7 #include<cmath> 8 #include<set> 9 #define INF 0x3f3f3f3f 10 #define LL long long 11 using namespace std; 12 int N; 13 14 int myabs(int x) 15 { 16 if(x < 0) return -x; 17 return x; 18 } 19 20 int main() 21 { 22 int w, st, ed; 23 int T_case; 24 scanf("%d", &T_case); 25 while(T_case--){ 26 scanf("%d", &N); 27 for(int i = 1; i <= N; i++){ 28 scanf("%d", &w); 29 if(i == 1) st = w; 30 if(i == N) ed = w; 31 } 32 int ans = sqrt(myabs(st-ed)); 33 printf("%d\n", ans); 34 } 35 return 0; 36 }
2018 Multi-University Training Contest 4 Problem L. Graph Theory Homework 【YY】
标签:mit script int col mod tween color case cal
原文地址:https://www.cnblogs.com/ymzjj/p/10330782.html