题意:

每个点能量每秒加1

按时间顺序给你N组时间+区间

表示在时间t时取走区间内的能量

问取走了多少能量

思路:

区间修改区间查询

加能量数延迟一下

去走后延迟一下

用两个flag保存延迟状态

/* ***********************************************
Author        :devil
Created Time  :2016/5/14 17:23:34
************************************************ */
#include <cstdio>
#include <cstring>
#include <iostream>
#include <algorithm>
#include <vector>
#include <queue>
#include <set>
#include <map>
#include <string>
#include <cmath>
#include <stdlib.h>
using namespace std;
const int N=1e5+7;
long long tree[N<<2];
bool flag[N<<2],flag2[N<<2];
int done[N<<2];
void pushdown2(int node,int l,int r)
{
    flag2[node]=0;
    flag[node]=0;
    tree[node]=0;
    done[node]=0;
    if(l==r) return ;
    int m=(l+r)>>1;
    tree[node<<1]=0;
    flag2[node<<1]=1;
    tree[node<<1|1]=0;
    flag2[node<<1|1]=1;
}
void pushdown(int node,int l,int r)
{
    if(flag2[node]) pushdown2(node,l,r);
    flag[node]=0;
    if(l==r) return ;
    int m=(l+r)>>1;
    if(flag2[node<<1]) pushdown2(node<<1,l,m);
    tree[node<<1]+=(m-l+1)*done[node];
    flag[node<<1]=1;
    done[node<<1]+=done[node];
    if(flag2[node<<1|1]) pushdown2(node<<1|1,m+1,r);
    tree[node<<1|1]+=(r-m)*done[node];
    flag[node<<1|1]=1;
    done[node<<1|1]+=done[node];
    //printf("%d %d %d %d %d\n",l,r,tree[node<<1],tree[node<<1|1],done[node]);
    done[node]=0;
}
void update(int node,int l,int r,int add)
{
    if(flag2[node]) pushdown2(node,l,r);
    flag[node]=1;
    done[node]+=add;
    tree[node]+=(r-l+1)*add;
}
long long query(int node,int l,int r,int x,int y)
{
    if(l>=x&&r<=y)
    {
        flag2[node]=1;
        long long tmp=tree[node];
        tree[node]=0;
        //printf("%d %d %d\n",l,r,tree[node]);
        return tmp;
    }
    if(flag2[node]) pushdown2(node,l,r);
    if(flag[node]) pushdown(node,l,r);
    int m=(l+r)>>1,ans=0;
    if(x<=m) ans+=query(node<<1,l,m,x,y);
    if(y>m) ans+=query(node<<1|1,m+1,r,x,y);
    tree[node]=tree[node<<1]+tree[node<<1|1];
    return ans;
}
int main()
{
    //freopen("in.txt","r",stdin);
    int t;
    scanf("%d",&t);
    while(t--)
    {
        int n,m,s,x,y,now=0;
        long long ans=0;
        scanf("%d%d",&n,&m);
        memset(tree,0,sizeof(tree));
        memset(done,0,sizeof(done));
        memset(flag,0,sizeof(flag));
        memset(flag2,0,sizeof(flag2));
        while(m--)
        {
            scanf("%d%d%d",&s,&x,&y);
            update(1,1,n,s-now);
            now=s;
            ans+=query(1,1,n,x,y);
        }
        printf("%lld\n",ans);
    }
    return 0;
}