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Tailmon’s Multiple 30
算法显而易见,要特判各位数相加为 0 的情况。
#include<bits/stdc++.h>
using namespace std;
int main()
{
int sum=0;
string s;
cin>>s;
sort(s.rbegin(),s.rend());
for(int i=0; i<s.size(); ++i)sum+=s[i]-'0';
cout<<(sum&&sum%3==0&&s.back()=='0'?s:"-1")<<'\n';
}
Tailmon’s Fibnacci Sequence
#include<bits/stdc++.h>
using namespae std;
typedef long long ll;
int main()
{
ll n,a=0,b=1,c,sum=1;
for(cin>>n; --n;)
{
c=b;
sum+=b+=a;
b%=1000000007;
sum%=1000000007;
a=c;
}
cout<<sum<<'\n';
}
Tailmon’s Evolution
题面没有说明的是,无论输入单词间有多少空格间隔,输出时统一按一个,结尾也要空格。
#include<bits/stdc++.h>
using namespace std;
int main()
{
for(string s; cin>>s;)
cout<<(s!="tailmon"?s:"angewomon")<<' ';
cout<<'\n';
}
Tailmon with God Ye
判断是否要对时间最长的任务上标签。
#include<bits/stdc++.h>
using namespace std;
int main()
{
int n,sum=0,g=0;
cin>>n;
for(int i=0,t; i<n; ++i)
cin>>t,sum+=t,g=max(g,t);
if(g>2)sum-=g-2;
cout<<sum<<'\n';
}
Tailmon Compares Numbers
#include<bits/stdc++.h>
using namespace std;
bool less(const string &s0,
const string &s1)
{
if(s0.size()!=s1.size())return s0.size()<s1.size();
for(int i=0; i!=s0.size(); ++i)
if(s0[i]!=s1[i])
return s0[i]<s1[i];
return 0;
}
int main()
{
string s[2];
for(int i=0,pos; i<2; ++i)
{
cin>>s[i];
for(pos=0;
pos<s[i].size()&&
s[i][pos]=='0';
++pos);
s[i]=s[i].substr(pos);
}
cout<<(less(s[0],s[1])?'<':
less(s[1],s[0])?'>':'=')
<<'\n';
}
Tailmon Wants to Make a Big News
#include<bits/stdc++.h>
using namespace std;
int cal(int n)
{
static int f[64]={0,1,2,0};
if(f[n])return f[n];
return f[n]=cal(n-1)+cal(n-2);
}
int main()
{
int n;
cin>>n;
cout<<cal(n)<<'\n';
}
Tailmon on a Chessboard
卡 cin 读入,换 C 做这题。
#include<stdio.h>
char chess[111][11111]= {0};
int n,m,q,t,x,y,pos[111]= {0};
int main()
{
scanf("%d%d%d",&n,&m,&q);
for(int i=1; i<=n; pos[i]=i++)
for(int j=1; j<=m; ++j)
chess[i][j]='.';
while(q--)
{
scanf("%d",&t);
if(t==1)
{
scanf("%d%d%d",&t,&x,&y);
chess[pos[x]][y]=(t==1?'w':'b');
}
else
{
scanf("%d%d",&x,&y);
t=pos[x];
pos[x]=pos[y];
pos[y]=t;
}
}
for(int i=1; i<=n; ++i)
printf("%s\n",chess[pos[i]]+1);
}
Tailmon Found Hakurei Shrine
对于询问的每个点,既然没有摧毁并且不能到达源点,那么与它们相邻的每个点一定不可以到达(反证:如果可以到达,那么询问点只需到达该点就可转至源点,与题意矛盾;前提:地震前所有点都连通)。于是强行摧毁所有与询问点联通且非询问点的点,便得到最优解。 出题人良心,凭借上述算法过不了第二个样例。原因是当上述点被摧毁后,又有新的点无法到达源点(样例中的 9 号点)。于是从源点 DFS 并避开所有询问点和摧毁点,此次 DFS 中没有访问到的点总数就是所求答案。
#include<bits/stdc++.h>
using namespace std;
struct Edge
{
int from,to;
}e_tmp;
struct Graph:vector<Edge>
{
int n;
vector<vector<int> > a;
void to_list(int _n)
{
n=_n;
a.assign(n,vector<int>());
for(iterator i=begin(); i!=end(); ++i)
a[i->from].push_back(i-begin());
}
}g;
int m,k,ans=0;
bool flag[30001]={0},vis[30001]={0};
void dfs(int k)
{
if(flag[k]||vis[k])return;
vis[k]=1;
for(int i=0;i!=g.a[k].size();++i)
dfs(g[g.a[k][i]].to);
}
int main()
{
cin>>g.n>>m>>k;
while(m--)
{
cin>>e_tmp.from>>e_tmp.to;
g.push_back(e_tmp);
swap(e_tmp.from,e_tmp.to);
g.push_back(e_tmp);
}
g.to_list(++g.n);
while(k--)
{
cin>>m;
flag[m]=1;
for(int i=0;i!=g.a[m].size();++i)
flag[g[g.a[m][i]].to]=1;
}
dfs(1);
for(int i=1;i!=g.n;++i)
if(flag[i]||!vis[i])
++ans;
cout<<ans<<'\n';
}
Tailmon %%%YSX
线段树,每个节点维护的值见注释,能过样例(比赛结束所以没办法评测?)。
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
const ll INF=1e18;
struct SegmentTree
{
struct Node
{
ll add,hl,hr;//该点add值,左右端点值
int ldown,rup,lman,rman,man;//依次是包含左端点的最长下降序列右端点、右…左、包含左端点的最长人字序列右端点、右…左、最长人字序列长度-1
};
vector<Node> v;
int LAST,L,R;
SegmentTree(int n):LAST(n),v(2*n+1) {}
Node& lv(int l,int r)
{
return v[l+r|l!=r];
}
void push_down(Node &lc,Node &rc,Node &fa)
{
lc.add+=fa.add;
rc.add+=fa.add;
fa.add=0;
}
void push_up(const Node &lc,const Node &rc,Node &fa,int l,int r)//将区间左右相连的lc、rc归并到fa
{
int m=l+(r-l)/2;
fa.hl=lc.hl,fa.hr=rc.hr;
fa.ldown=lc.ldown;
if(fa.ldown==m&&lc.hr>rc.hl)
fa.ldown=rc.ldown;
fa.rup=rc.rup;
if(fa.rup==m+1&&lc.hr<rc.hl)
fa.rup=lc.rup;
fa.lman=lc.lman;
if(fa.lman==m&&lc.hr>rc.hl)
fa.lman=max(fa.lman,rc.ldown);
if(lc.rup==l&&lc.hr<rc.hl)
fa.lman=max(fa.lman,rc.lman);
fa.rman=rc.rman;
if(fa.rman==m+1&&lc.hr<rc.hl)
fa.rman=min(fa.rman,lc.rup);
if(rc.ldown==r&&lc.hr>rc.hl)
fa.rman=min(fa.rman,lc.rman);
fa.man=max(lc.man,rc.man);
fa.man=max(fa.man,rc.ldown-lc.rup);
fa.man=max(fa.man,fa.lman-l);
fa.man=max(fa.man,r-fa.rman);
if(lc.hr<rc.hl)fa.man=max(fa.man,rc.lman-lc.rup);
if(lc.hr>rc.hl)fa.man=max(fa.man,rc.ldown-lc.rman);
}
void maintain(int l,int r)
{
Node &fa=lv(l,r);
if(l<r)
{
int m=l+(r-l)/2;
push_up(lv(l,m),lv(m+1,r),fa,l,r);
}
else
{
fa.ldown=fa.rup=fa.lman=fa.rman=l;
fa.hl=fa.hr=fa.man=0;
}
fa.hl+=fa.add,fa.hr+=fa.add;
}
void add(int l,int r,ll val,bool out=1)
{
if(out)return L=l,R=r,add(1,LAST,val,0);
if(L<=l&&r<=R)lv(l,r).add+=val;
else
{
int m=l+(r-l)/2;
push_down(lv(l,m),lv(m+1,r),lv(l,r));
if(L<=m)add(l,m,val,0);
else maintain(l,m);
if(R>m)add(m+1,r,val,0);
else maintain(m+1,r);
}
maintain(l,r);
}
};
int main()
{
int n,m;
cin>>n>>m;
SegmentTree teemo(n);
for(int i=1,d; i<=n; ++i)
cin>>d,teemo.add(i,i,d);
for(int i=1,l,r,d; i<=m; ++i)
{
cin>>l>>r>>d,teemo.add(l,r,d);
cout<<teemo.lv(1,n).man+1<<'\n';
}
}
队友的过评测代码
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const int N=100005;
const int M=N*5;
int n,m,mx1L[M],mx1R[M],mx2L[M],mx2R[M],mxL[M],mxR[M],mx[M];
ll a[N],Left[M],Right[M],tag[M];
inline void cmax(int&x,int y){if(y>x)x=y;}
void up(int l,int r,int x){
int mid=(l+r)>>1;
Left[x]=Left[x<<1];
Right[x]=Right[x<<1|1];
mx1L[x]=mx1L[x<<1];
if(mx1L[x<<1]==mid-l+1&&Right[x<<1]<Left[x<<1|1])mx1L[x]+=mx1L[x<<1|1];
mx1R[x]=mx1R[x<<1|1];
if(mx1R[x<<1|1]==r-mid&&Right[x<<1]<Left[x<<1|1])mx1R[x]+=mx1R[x<<1];
mx2L[x]=mx2L[x<<1];
if(mx2L[x<<1]==mid-l+1&&Right[x<<1]>Left[x<<1|1])mx2L[x]+=mx2L[x<<1|1];
mx2R[x]=mx2R[x<<1|1];
if(mx2R[x<<1|1]==r-mid&&Right[x<<1]>Left[x<<1|1])mx2R[x]+=mx2R[x<<1];
mxL[x]=mxL[x<<1];
if(mxL[x<<1]==mid-l+1&&Right[x<<1]>Left[x<<1|1])mxL[x]+=mx2L[x<<1|1];
if(mx1L[x<<1]==mid-l+1&&Right[x<<1]<Left[x<<1|1])cmax(mxL[x],mid-l+1+mxL[x<<1|1]);
mxR[x]=mxR[x<<1|1];
if(mxR[x<<1|1]==r-mid&&Right[x<<1]<Left[x<<1|1])mxR[x]+=mx1R[x<<1];
if(mx2R[x<<1|1]==r-mid&&Right[x<<1]>Left[x<<1|1])cmax(mxR[x],r-mid+mxR[x<<1]);
mx[x]=max(mxL[x],mxR[x]);
cmax(mx[x],max(mx[x<<1],mx[x<<1|1]));
if(Right[x<<1]>Left[x<<1|1])cmax(mx[x],mxR[x<<1]+mx2L[x<<1|1]);
if(Right[x<<1]<Left[x<<1|1])cmax(mx[x],mx1R[x<<1]+mxL[x<<1|1]);
}
void down(int l,int r,int x){
if(tag[x]){
tag[x<<1]+=tag[x];
tag[x<<1|1]+=tag[x];
Left[x<<1]+=tag[x];
Left[x<<1|1]+=tag[x];
Right[x<<1]+=tag[x];
Right[x<<1|1]+=tag[x];
tag[x]=0;
}
}
void build(int l,int r,int x){
if(l==r){
Left[x]=Right[x]=a[l];
mx1L[x]=mx1R[x]=mx2L[x]=mx2R[x]=mxL[x]=mxR[x]=mx[x]=1;
return;
}
int mid=(l+r)>>1;
build(l,mid,x<<1);
build(mid+1,r,x<<1|1);
up(l,r,x);
}
void update(int v,int L,int R,int l,int r,int x){
if(l>=L&&r<=R){
Left[x]+=v;
Right[x]+=v;
tag[x]+=v;
return;
}
down(l,r,x);
int mid=(l+r)>>1;
if(L<=mid)update(v,L,R,l,mid,x<<1);
if(R>mid)update(v,L,R,mid+1,r,x<<1|1);
if(L==l)Left[x]+=v;
if(R==r)Right[x]+=v;
up(l,r,x);
}
int main(){
//freopen("aa.in","r",stdin);
int i,j,l,r,x;
scanf("%d%d",&n,&m);
for(i=1;i<=n;++i)cin>>a[i];
build(1,n,1);
for(i=1;i<=m;++i){
scanf("%d%d%d",&l,&r,&x);
update(x,l,r,1,n,1);
printf("%d\n",mx[1]);
}
return 0;
}