Codeforces Round #179 (Div. 1) A. Greg and Array 离线区间修改

A. Greg and Array

Time Limit: 20 Sec

Memory Limit: 256 MB

题目连接

http://codeforces.com/contest/295/problem/A

Description

Greg has an array a = a1, a2, ..., an and m operations. Each operation looks as: li, ri, di, (1 ≤ li ≤ ri ≤ n). To apply operation i to the array means to increase all array elements with numbers li, li + 1, ..., ri by value di.

Greg wrote down k queries on a piece of paper. Each query has the following form: xi, yi, (1 ≤ xi ≤ yi ≤ m). That means that one should apply operations with numbers xi, xi + 1, ..., yi to the array.

Now Greg is wondering, what the array a will be after all the queries are executed. Help Greg.

Input

The first line contains integers n, m, k (1 ≤ n, m, k ≤ 105). The second line contains n integers: a1, a2, ..., an (0 ≤ ai ≤ 105) — the initial array.

Next m lines contain operations, the operation number i is written as three integers: li, ri, di, (1 ≤ li ≤ ri ≤ n), (0 ≤ di ≤ 105).

Next k lines contain the queries, the query number i is written as two integers: xi, yi, (1 ≤ xi ≤ yi ≤ m).

The numbers in the lines are separated by single spaces.

Output

On a single line print n integers a1, a2, ..., an — the array after executing all the queries. Separate the printed numbers by spaces.

Please, do not use the %lld specifier to read or write 64-bit integers in C++. It is preferred to use the cin, cout streams of the %I64dspecifier.

Sample Input

3 3 3
1 2 3
1 2 1
1 3 2
2 3 4
1 2
1 3
2 3

Sample Output

9 18 17

HINT

 

题意

给你n个数，然后有m个命令，每个命令是将[l,r]中的数都增加d，有k次真正要执行的操作（。。），是将第[l,r]的命令执行一遍

然后问你，这个n个数，最后悔变成什么模样。

题解：

这道题扫一遍就好了，由于只有最后一次询问，那么我们可以离线去做，而不用去写什么线段树

首先我们离线处理操作，然后得到每一个命令都会执行多少次，然后我们再离线去处理命令就好了

离线处理，就是在起始端和结束段打上标记，然后扫一遍就好了

代码：

#include<iostream>
#include<stdio.h>
using namespace std;
#define maxn 100005
long long a[maxn];
long long flag[maxn];
long long t[maxn];
struct OP
{
    int x,y;
    long long val;
};
OP op[maxn];
int main()
{
    int n,m,k;scanf("%d%d%d",&n,&m,&k);
    for(int i=1;i<=n;i++)
        scanf("%lld",&a[i]);
    for(int i=1;i<=m;i++)
    {
        int x,y;long long z;
        scanf("%d%d%lld",&op[i].x,&op[i].y,&op[i].val);
    }
    for(int i=1;i<=k;i++)
    {
        int x,y;scanf("%d%d",&x,&y);
        t[x]++;
        t[y+1]--;
    }
    long long sum = 0;
    for(int i=1;i<=m;i++)
    {
        sum+=t[i];
        op[i].val*=sum;
    }
    for(int i=1;i<=m;i++)
    {
        flag[op[i].x]+=op[i].val;
        flag[op[i].y+1]-=op[i].val;
    }
    sum = 0;
    for(int i=1;i<=n;i++)
    {
        sum+=flag[i];
        printf("%lld ",a[i]+sum);
    }
    printf("\n");
}