怎么说呢,最后一个点跑了1234ms但是vijos没给TLE,我就厚颜无耻地认为自己过了吧!
标准的lazy线段树写法,权当存个模版了!
# | 状态 | 耗时 | 内存占用 |
---|---|---|---|
#1 | 4ms | 380.0 KiB | |
#2 | 4ms | 348.0 KiB | |
#3 | 3ms | 384.0 KiB | |
#4 | 4ms | 372.0 KiB | |
#5 | 4ms | 360.0 KiB | |
#6 | 4ms | 348.0 KiB | |
#7 | 42ms | 3.219 MiB | |
#8 | 57ms | 3.734 MiB | |
#9 | 76ms | 3.836 MiB | |
#10 | 96ms | 2.375 MiB | |
#11 | 104ms | 2.859 MiB | |
#12 | 116ms | 2.492 MiB | |
#13 | 150ms | 4.25 MiB | |
#14 | 116ms | 3.082 MiB | |
#15 | 440ms | 18.121 MiB | |
#16 | 619ms | 17.84 MiB | |
#17 | 859ms | 17.824 MiB | |
#18 | 943ms | 16.742 MiB | |
#19 | 1185ms | 18.117 MiB | |
#20 | 1234ms | 18.461 MiB |
1 #include2 #include 3 #include 4 #include 5 #include 6 using namespace std; 7 template inline void read(T &_a){ 8 bool f=0;int _ch=getchar();_a=0; 9 while(_ch<'0' || _ch>'9'){ if(_ch=='-')f=1;_ch=getchar();}10 while(_ch>='0' && _ch<='9'){_a=(_a<<1)+(_a<<3)+_ch-'0';_ch=getchar();}11 if(f)_a=-_a;12 }13 14 const int maxn=1000001;15 struct fff16 {17 int minn,lazy;18 }node[(maxn<<2)+(maxn<<1)];19 int n,m;20 21 inline void pushup(int u)22 {23 node[u].minn=min(node[u<<1].minn,node[u<<1|1].minn);24 }25 26 inline void pushdown(int u)27 {28 if(node[u].lazy)29 {30 node[u<<1].lazy+=node[u].lazy;31 node[u<<1|1].lazy+=node[u].lazy;32 node[u<<1].minn-=node[u].lazy;33 node[u<<1|1].minn-=node[u].lazy;34 node[u].lazy=0;35 }36 }37 38 void build(int u,int l,int r)39 {40 if(l==r) { read(node[u].minn); return ; }41 int mid=(l+r)>>1;42 build(u<<1,l,mid);43 build(u<<1|1,mid+1,r);44 pushup(u);45 }46 47 int query(int u,int l,int r,int L,int R)48 {49 if(L<=l&&r<=R) return node[u].minn;50 pushdown(u);51 int mid=(l+r)>>1;52 if(R<=mid) return query(u<<1,l,mid,L,R);53 if(L>mid) return query(u<<1|1,mid+1,r,L,R);54 return min(query(u<<1,l,mid,L,R),query(u<<1|1,mid+1,r,L,R));55 }56 57 void update(int u,int l,int r,int L,int R,int val)58 {59 if(L<=l&&r<=R)60 {61 node[u].lazy+=val;62 node[u].minn-=val;63 return ;64 }65 pushdown(u);66 int mid=(l+r)>>1;67 if(L<=mid) update(u<<1,l,mid,L,R,val);68 if(R>mid) update(u<<1|1,mid+1,r,L,R,val);69 pushup(u);70 return ;71 }72 73 inline void out()74 {75 for (register int i=1;i<=n;++i)76 printf("%d ",query(1,1,n,i,i));putchar('\n');77 }78 79 int main()80 {81 read(n); read(m);82 build(1,1,n);83 // out();84 for (register int cas=1,d,s,j;cas<=m;++cas)85 {86 read(d); read(s); read(j);87 int num=query(1,1,n,s,j);88 // printf("[%d]\n",num);89 if(num