(我又来水博客了)才五天没写题,打成这样子,会被自己气sha
https://www.acwing.com/activity/content/2870/
AcWing 4806. 首字母大写
#include<bits/stdc++.h>
using namespace std;
typedef long long LL;
typedef pair<LL,LL> PII;
const LL MAXN=1e18,MINN=31;
const LL N=1e6+10,M=4002;
const double PI=3.1415926535;
#define endl '\n'
int main()
{
cin.tie(0); cout.tie(0); ios::sync_with_stdio(false);
int T=1;
//cin>>T;
while(T--)
{
string s;
cin>>s;
if(s[0]>=65&&s[0]<=92) cout<<s<<endl;
else
{
s[0]-=32;
cout<<s<<endl;
}
}
return 0;
}
AcWing 4807. 找数字
#include<bits/stdc++.h>
using namespace std;
typedef long long LL;
typedef pair<LL,LL> PII;
const LL MAXN=1e18,MINN=31;
const LL N=1e6+10,M=4002;
const double PI=3.1415926535;
#define endl '\n'
int main()
{
//cin.tie(0); cout.tie(0); ios::sync_with_stdio(false);
int T=1;
//cin>>T;
while(T--)
{
LL m,s;
cin>>m>>s;
LL ss=s;
bool flag=true;
string minn,maxn;
s-=1;
for(int i=m;i>=2;i--)
{
if(s>=9)
{
minn+='9';
s-=9;
}
else if(s!=0)
{
minn+=to_string(s);
s=0;
}
else if(s==0) minn+='0';
}
minn+=to_string(s+1);
reverse(minn.begin(),minn.end());
//cout<<minn<<endl;
if(minn.size()!=m) flag=false;
for(int i=1;i<=m;i++)
{
if(ss>=9)
{
maxn+='9';
ss-=9;
}
else if(ss!=0)
{
maxn+=to_string(ss);
ss=0;
}
else if(ss==0) maxn+='0';
}
if(ss!=0) flag=false;
if(maxn.size()!=m) flag=false;
if(flag==false) cout<<"-1 -1"<<endl;
else cout<<minn<<" "<<maxn<<endl;
}
return 0;
}
AcWing 4808. 构造字符串
#include<bits/stdc++.h>
using namespace std;
typedef long long LL;
typedef pair<LL,LL> PII;
const LL MAXN=1e18,MINN=31;
const LL N=1e6+10,M=4002;
const double PI=3.1415926535;
#define endl '\n'
int main()
{
//cin.tie(0); cout.tie(0); ios::sync_with_stdio(false);
int T=1;
//cin>>T;
while(T--)
{
LL n,m;
cin>>n>>m;
string s;
cin>>s;
string ccc=s;
s=" "+s;
LL idx=0;
for(LL i=1;i<s.size()-1;i++)
{
string c=s.substr(s.size()-i,i);
string be=s.substr(1,i);
//cout<<be<<" "<<c<<endl;
if(be==c) idx=max(idx,i);
}
//cout<<idx<<endl;
string ans=ccc;
string flag=ccc.substr(idx);
//cout<<flag<<endl;
for(int i=1;i<m;i++)
ans+=flag;
cout<<ans<<endl;
}
return 0;
}
标签:周赛,ABC,const,string,minn,int,LL,cin,90
From: https://www.cnblogs.com/Vivian-0918/p/17112491.html