HDU 5443 The Water Problem 解题报告（如题）

The Water Problem

Time Limit: 1500/1000 MS (Java/Others)    Memory Limit: 131072/131072 K (Java/Others)

Total Submission(s): 222    Accepted Submission(s): 181


[align=left]Problem Description[/align]
In Land waterless, water is a very limited resource. People always fight for the biggest source of water. Given a sequence of water sources with
a1,a2,a3,...,an
representing the size of the water source. Given a set of queries each containing
2
integers l
and r,
please find out the biggest water source between al
and ar.
 

[align=left]Input[/align]
First you are given an integer
T(T≤10)
indicating the number of test cases. For each test case, there is a number
n(0≤n≤1000)
on a line representing the number of water sources.
n
integers follow, respectively a1,a2,a3,...,an,
and each integer is in {1,...,106}.
On the next line, there is a number q(0≤q≤1000)
representing the number of queries. After that, there will be
q
lines with two integers l
and r(1≤l≤r≤n)
indicating the range of which you should find out the biggest water source.
 

[align=left]Output[/align]
For each query, output an integer representing the size of the biggest water source.
 

[align=left]Sample Input[/align]

3
1
100
1
1 1
5
1 2 3 4 5
5
1 2
1 3
2 4
3 4
3 5
3
1 999999 1
4
1 1
1 2
2 3
3 3

 

[align=left]Sample Output[/align]

100
2
3
4
4
5
1
999999
999999
1

 

[align=left]Source[/align]
2015 ACM/ICPC Asia Regional Changchun Online

 
    解题报告：其实一开始让我写这题的解题报告我是拒绝的。

#include <cmath>
#include <cstdio>
#include <cstring>
#include <algorithm>
#include <iostream>
#include <string>
#include <set>
#include <map>
#include <queue>
#include <vector>
#include <functional>
#include <cassert>
#include <bitset>
using namespace std;

typedef long long ll;
typedef unsigned long long ull;

#define ff(i, n) for(int i=0,END=(n);i<END;i++)
#define fff(i, n, m) for(int i=(n),END=(m);i<=END;i++)
#define dff(i, n, m) for(int i=(n),END=(m);i>=END;i--)
#define travel(e, u) for(int e=first[u], v=vv[first[u]]; ~e; e=nxt[e])
#define mid ((l+r)/2)
#define bit(n) (1ll<<(n))
#define clr(a, b) memset(a, b, sizeof(a))
#define debug(x) cout << #x << " = " << x << endl;

#define ls (rt << 1)
#define rs (ls | 1)
#define lson l, m, ls
#define rson m + 1, r, rs

void work();

int main() {
work();
return 0;
}

/**************************Beautiful GEGE**********************************/

int a[1111];

void work() {
int T; scanf("%d", &T);
fff(cas, 1, T) {
int n; scanf("%d", &n);
ff(i, n) scanf("%d", a + i);

int q; scanf("%d", &q);
ff(i, q) {
int l, r; scanf("%d%d", &l, &r);
printf("%d\n", *max_element(a + l - 1, a + r));
}
}
}