1．鏈接地址

? ??https://vjudge.net/problem/POJ-2017

2．問(wèn)題描述

?Bill and Ted are taking a road trip. But the odometer in their car is broken, so they don't know how many miles they have driven. Fortunately, Bill has a working stopwatch, so they can record their speed and the total time they have driven. Unfortunately, their record keeping strategy is a little odd, so they need help computing the total distance driven. You are to write a program to do this computation.?

For example, if their log shows?

Speed in miles perhour	Total elapsed time in hours
20	2
30	6
10	7

this means they drove 2 hours at 20 miles per hour, then 6-2=4 hours at 30 miles per hour, then 7-6=1 hour at 10 miles per hour. The distance driven is then (2)(20) + (4)(30) + (1)(10) = 40 + 120 + 10 = 170 miles. Note that the total elapsed time is always since the beginning of the trip, not since the previous entry in their log.

輸入樣例

3 20 2 30 6 10 7 2 60 1 30 5 4 15 1 25 2 30 3 10 5 -1

輸出樣例

170 miles 180 miles 90 miles

3．解題思路

?簡(jiǎn)單的數(shù)學(xué)題

4．算法實(shí)現(xiàn)源代碼

#include<iostream> #include<cstdio> #include<cstring> using namespace std; const int maxn = 15; int s[maxn],t[maxn]; int main() {int n;while(scanf("%d",&n) && n!=-1){memset(s,0,sizeof(s));memset(t,0,sizeof(t));int sum=0;for(int i=1;i<=n;i++){scanf("%d %d",&s[i],&t[i]);sum+=s[i]*(t[i]-t[i-1]);}printf("%d miles\n",sum);} }

?

?

轉(zhuǎn)載于:https://www.cnblogs.com/KasenBob/p/11163664.html

總結(jié)

以上是生活随笔為你收集整理的poj2017的全部?jī)?nèi)容，希望文章能夠幫你解決所遇到的問(wèn)題。

如果覺(jué)得生活随笔網(wǎng)站內(nèi)容還不錯(cuò)，歡迎將生活随笔推薦給好友。