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#336874#7398. Triangle TilingKevin5307Compile Error//C++203.8kb2024-02-24 23:10:022024-02-24 23:10:02

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answer

//Author: Kevin
#include<bits/stdc++.h>
//#pragma GCC optimize("O2")
using namespace std;
#define ll long long
#define ull unsigned ll
#define pb emplace_back
#define mp make_pair
#define ALL(x) (x).begin(),(x).end()
#define rALL(x) (x).rbegin(),(x).rend()
#define srt(x) sort(ALL(x))
#define rev(x) reverse(ALL(x))
#define rsrt(x) sort(rALL(x))
#define sz(x) (int)(x.size())
#define inf 0x3f3f3f3f
#define pii pair<int,int>
#define lb(v,x) (int)(lower_bound(ALL(v),x)-v.begin())
#define ub(v,x) (int)(upper_bound(ALL(v),x)-v.begin())
#define uni(v) v.resize(unique(ALL(v))-v.begin())
#define longer __int128_t
void die(string S){puts(S.c_str());exit(0);}
char grid[5005][5005];
int val[5005][5005];
bool token[5005];
class segtree
{
	public:
		#define ls (x<<1)
		#define rs (ls|1)
		int mn[5005<<2];
		int tag[5005<<2];
		void build(int x,int l,int r)
		{
			mn[x]=0;
			tag[x]=0;
			if(l==r) return ;
			int mid=(l+r)/2;
			build(ls,l,mid);
			build(rs,mid+1,r);
		}
		void pushdown(int x,int l,int r)
		{
			mn[x]+=tag[x];
			if(l!=r)
			{
				tag[ls]+=tag[x];
				tag[rs]+=tag[x];
			}
			tag[x]=0;
		}
		int query(int x,int l,int r,int ql,int qr)
		{
			pushdown(x,l,r);
			if(l==ql&&r==qr)
				return mn[x];
			int mid=(l+r)/2;
			if(qr<=mid)
				return query(ls,l,mid,ql,qr);
			if(ql>mid)
				return query(rs,mid+1,r,ql,qr);
			return min(query(ls,l,mid,ql,mid),query(rs,mid+1,r,mid+1,qr));
		}
		void pushup(int x,int l,int r)
		{
			int mid=(l+r)/2;
			pushdown(ls,l,mid);
			pushdown(rs,mid+1,r);
			mn[x]=min(mn[ls],mn[rs]);
		}
		void update(int x,int l,int r,int ql,int qr,int v)
		{
			pushdown(x,l,r);
			if(l==ql&&r==qr)
			{
				tag[x]+=v;
				return ;
			}
			int mid=(l+r)/2;
			if(ql<=mid)
				update(ls,l,mid,ql,min(mid,qr),v);
			if(qr>mid)
				update(rs,mid+1,r,max(mid+1,ql),qr,v);
			pushup(x,l,r);
		}
		#undef ls
		#undef rs
}segt[5005];
char ans[5005][5005];
int main()
{
	ios_base::sync_with_stdio(false);
	cin.tie(0);
	cout.tie(0);
	int t;
	cin>>t;
	while(t--)
	{
		int n;
		cin>>n;
		for(int i=1;i<=n;i++)
			cin>>(grid[i]+1);
		for(int i=1;i<=n;i++)
			for(int j=i;j<=n;j++)
				val[i][j]=0;
		vector<pii> vec;
		for(int i=1;i<=n;i++)
			for(int j=1;j<=i;j++)
				if(grid[i][j]=='0')
				{
					ans[i][j]='-';
					vec.pb(i,j);
					val[j][j+n-i]++;
				}
				else
					ans[i][j]='2';
		if(sz(vec)!=n)
		{
			cout<<"Impossible!"<<endl;
			continue;
		}
		for(int len=1;len<=n;len++)
			for(int i=1,j=len;j<=n;i++,j++)
				val[i][j]+=val[i+1][j]+val[i][j-1]-val[i+1][j-1];
		bool flag=1;
		for(int len=1;len<=n;len++)
			for(int i=1,j=len;j<=n;i++,j++)
			{
				val[i][j]-=len;
				if(val[i][j]>0)
					flag=0;
				val[i][j]=-val[i][j];
			}
		srt(vec);
		for(int i=0;i<n;i++)
			if(vec[i].first<=i)
				flag=0;
		if(!flag)
		{
			cout<<"Impossible!"<<endl;
			continue;
		}
		memset(token,0,sizeof(token));
		for(int i=1;i<=n;i++)
			if(grid[n][i]=='1')
				token[i]=1;
		for(int i=1;i<=n;i++)
			segt[i].build(1,1,n);
		for(int i=1;i<=n;i++)
			for(int j=i;j<=n;j++)
				segt[j].update(1,1,n,i,i,val[i][j]);
		for(int i=n;i>1;i--)
		{
			static bool ntoken[5005];
			memset(ntoken,0,sizeof(ntoken));
			for(int j=1;j<=i;j++)
				if(token[j])
				{
					int mn=segt[j+n-i].query(1,1,n,1,j);
					if(mn)
					{
						assert(j!=i);
						ntoken[j]=1;
						segt[j+n-i].update(1,1,n,1,j,-1);
						ans[i][j]='3';
					}
					else
					{
						int p=i;
						while(p&&grid[p][j-(i-p)]=='1')
						{
							ans[p][j-(i-p)]='1';
							p--;
						}
						assert(p);
						for(int k=j+n-i;k<=n;k++)
							segt[k].update(1,1,n,j-(i-p)+1,j,-1);
					}
				}
			memcpy(token,ntoken,sizeof(token));
		}
		for(int i=1;i<=n;i++)
		{
			for(int j=1;j<=i;j++)
				cout<<ans[i][j];
			cout<<endl;
		}
	}
	return 0;
}
源文件, 语言: C++20

详细 

answer.code: In function ‘int main()’:
answer.code:101:28: error: no match for ‘operator>>’ (operand types are ‘std::istream’ {aka ‘std::basic_istream<char>’} and ‘char*’)
  101 |                         cin>>(grid[i]+1);
      |                         ~~~^~~~~~~~~~~~~
      |                         |            |
      |                         |            char*
      |                         std::istream {aka std::basic_istream<char>}
In file included from /usr/include/c++/13/sstream:40,
                 from /usr/include/c++/13/complex:45,
                 from /usr/include/c++/13/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/13/bits/stdc++.h:127,
                 from answer.code:2:
/usr/include/c++/13/istream:325:7: note: candidate: ‘std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(void*&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]’ (near match)
  325 |       operator>>(void*& __p)
      |       ^~~~~~~~
/usr/include/c++/13/istream:325:7: note:   conversion of argument 1 would be ill-formed:
answer.code:101:38: error: cannot bind non-const lvalue reference of type ‘void*&’ to an rvalue of type ‘void*’
  101 |                         cin>>(grid[i]+1);
      |                              ~~~~~~~~^~~
/usr/include/c++/13/istream:201:7: note: candidate: ‘std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long long unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]’ (near match)
  201 |       operator>>(unsigned long long& __n)
      |       ^~~~~~~~
/usr/include/c++/13/istream:201:7: note:   conversion of argument 1 would be ill-formed:
answer.code:101:38: error: invalid conversion from ‘char*’ to ‘long long unsigned int’ [-fpermissive]
  101 |                         cin>>(grid[i]+1);
      |                              ~~~~~~~~^~~
      |                                      |
      |                                      char*
answer.code:101:38: error: cannot bind rvalue ‘(long long unsigned int)(((char*)(& grid[i])) + 1)’ to ‘long long unsigned int&’
/usr/include/c++/13/istream:197:7: note: candidate: ‘std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long long int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]’ (near match)
  197 |       operator>>(long long& __n)
      |       ^~~~~~~~
/usr/include/c++/13/istream:197:7: note:   conversion of argument 1 would be ill-formed:
answer.code:101:38: error: invalid conversion from ‘char*’ to ‘long long int’ [-fpermissive]
  101 |                         cin>>(grid[i]+1);
      |                              ~~~~~~~~^~~
      |                                      |
      |                                      char*
answer.code:101:38: error: cannot bind rvalue ‘(long long int)(((char*)(& grid[i])) + 1)’ to ‘long long int&’
/usr/include/c++/13/istream:192:7: note: candidate: ‘std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]’ (near match)
  192 |       operator>>(unsigned long& __n)
      |       ^~~~~~~~
/usr/include/c++/13/istream:192:7: note:   conversion of argument 1 would be ill-formed:
answer.code:101:38: error: invalid conversion from ‘char*’ to ‘long unsigned int’ [-fpermissive]
  101 |                         cin>>(grid[i]+1);
      |                              ~~~~~~~~^~~
      |                                      |
      |                                      char*
answer.code:101:38: error: cannot bind rvalue ‘(long unsigned int)(((char*)(& grid[i])) + 1)’ to ‘long unsigned int&’
/usr/include/c++/13/istream:188:7: note: candidate: ‘std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]’ (near match)
  188 |       operator>>(long& __n)
      |       ^~~~~~~~
/usr/include/c++/13/istream:188:7: note:   conversion of argument 1 would be ill-formed:
answer.code:101:38: error: invalid conversion from ‘char*’ to ‘long int’ [-fpermissive]
  101 |                         cin>>(grid[i]+1);
      |                              ~~~~~~~~^~~
      |                                      |
      |                                      char*
answer.code:101:38: error: cannot bind rvalue ‘(long int)(((char*)(& grid[i])) + 1)’ to ‘long int&’
/usr/include/c++/13/istream:184:7: note: candidate: ‘std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<cha...
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