题目链接
https://www.patest.cn/contests/gplt/L1-043
思路
将每一次 借出和归还 都用 MAP 标记 如果归还的时候 已经被标记过了 那么 ANS ++ 并且 TIME 也加上相应时间
最后 算一下平均时间 要四舍五入
AC代码
#include <iostream>
#include <cstdio>
#include <algorithm>
#include <cmath>
#include <deque>
#include <vector>
#include <queue>
#include <string>
#include <cstring>
#include <map>
#include <stack>
#include <set>
#include <cstdlib>
#include <ctype.h>
#include <numeric>
#include <sstream>
using namespace std;
typedef long long LL;
const double PI = 3.14159265358979323846264338327;
const double E = 2.718281828459;
const double eps = 1e-6;
const int MAXN = 0x3f3f3f3f;
const int MINN = 0xc0c0c0c0;
const int maxn = 1e5 + 5;
const int MOD = 1e9 + 7;
struct node
{
int time;
int flag;
};
int main()
{
int t;
cin >> t;
a:
while (t--)
{
map <string, node> m;
m.clear();
string ID;
char vis;
int h, mins;
int ans = 0;
int time = 0;
while (cin >> ID)
{
scanf(" %c %02d:%02d", &vis, &h, &mins);
if (ID == "0")
{
if (ans > 0)
time = (int)(time*1.0/ans + 0.5);
printf("%d %d
", ans, time);
goto a;
}
else
{
if (vis == 'S')
{
m[ID].time = h * 60 + mins;
m[ID].flag = 1;
}
else if (vis == 'E')
{
if (m[ID].flag == 1)
{
ans ++;
time += (h * 60 + mins) - m[ID].time;
m.erase(ID);
}
}
}
}
}
}