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ID题目提交者结果用时内存语言文件大小提交时间测评时间
#287947#7979. 棋盘zhouhuanyi100 ✓609ms3836kbC++206.8kb2023-12-21 12:29:092023-12-21 12:29:11

Judging History

你现在查看的是最新测评结果

  • [2023-12-21 12:29:11]
  • 评测
  • 测评结果:100
  • 用时:609ms
  • 内存:3836kb
  • [2023-12-21 12:29:09]
  • 提交

answer

#include<iostream>
#include<cstdio>
#include<vector>
#define N 960
#define __builtin_ia32_adc(x,y,flag) __asm__("addb   %3, %0\n\t" "adcq   %2, %1\n\t" "setc   %0":"+r"(flag),"+r"(x):"r"(y),"i"(-1):"cc")
using namespace std;
const long long maxn=(long long)(1e18);
int read()
{
	char c=0;
	int sum=0;
	while (c<'0'||c>'9') c=getchar();
	while ('0'<=c&&c<='9') sum=sum*10+c-'0',c=getchar();
	return sum;
}
struct bigint{
    typedef unsigned long long u64;
    typedef unsigned __int128 u128;
    typedef std::size_t st;
    std::vector<u64> data;
    bigint(){}
    bigint(u64 x):data(x?std::vector<u64>{x}:std::vector<u64>{}){}
    bigint(const std::string &s){
        st pos=s.length();
        int cnt=0;
        u64 val=0;
        while(pos){
            pos--;
            if(cnt==64){
                data.push_back(val);
                val=0;cnt=0;
            }
            val|=(u64)(s[pos]=='1')<<cnt;
            ++cnt;
        }
        if(cnt&&val)data.push_back(val);
    }
    explicit operator std::string()const{
        if(data.empty())return "0";
        bool t=0;
        std::string ret;
        for(int i=63;i>=0;i--){
            t|=(data.back()>>i)&1;
            if(t)ret+='0'|((data.back()>>i)&1);
        }
        st i=data.size()-1;
        while(i){
            i--;
            for(int j=63;j>=0;j--)ret+='0'|((data[i]>>j)&1);
        }
        return ret;
    }
    explicit operator bool()const{return !data.empty();}
    explicit operator u64()const{return data.empty()?0:data[0];}
    st digit()const{
        if(data.empty())return 0;
        return (data.size()<<6)-__builtin_clzll(data.back());
    }
    bool operator==(const bigint &a)const{return a.data==data;}
    bool operator!=(const bigint &a)const{return a.data!=data;}
    bool operator<(const bigint &a)const{
        if(data.size()!=a.data.size())return data.size()<a.data.size();
        for(st i=data.size();i;){
            i--;
            if(data[i]!=a.data[i])return data[i]<a.data[i];
        }
        return 0;
    }
    bool operator>(const bigint &a)const{return a<(*this);}
    bool operator<=(const bigint &a)const{return !(*this>a);}
    bool operator>=(const bigint &a)const{return !(*this<a);}
    bigint &operator<<=(st n){
        if(data.empty())return *this;
        int w=n&63;st z=n>>6;
        st i=data.size();
        bool flg=0;
        if(w&&(data.back()>>(64-w)))data.push_back(0),flg=1;
        data.resize(data.size()+z);
        while(i){
            i--;
            if(flg)data[i+z+1]|=data[i]>>(64-w);
            data[i+z]=data[i]<<w;
            flg|=bool(w);
        }
        for(st i=0;i<z;i++)data[i]=0;
        return *this;
    }
    bigint &operator>>=(st n){
        int w=n&63;st z=n>>6,i=0;
        for(;i+z<data.size();i++){
            if(w&&i)data[i-1]|=data[i+z]<<(64-w);
            data[i]=data[i+z]>>w;
        }
        while(data.size()>i)data.pop_back();
        while(!data.empty()&&data.back()==0)data.pop_back();
        return *this;
    }
    bigint operator<<(st n)const{return bigint(*this)<<=n;}
    bigint operator>>(st n)const{return bigint(*this)>>=n;}
    bigint &operator+=(const bigint &a){
        data.resize(std::max(data.size(),a.data.size()));
        bool carry=0;
        for(st i=0;i<data.size();i++){
            u64 rg=0;
            if(i<a.data.size())rg=a.data[i];
            __builtin_ia32_adc(data[i],rg,carry);
        }
        if(carry)data.push_back(1);
        return *this;
    }
    bigint &operator-=(const bigint &a){
        bool carry=1;
        for(st i=0;i<data.size();i++){
            u64 rg=-1;
            if(i<a.data.size())rg=~a.data[i];
            __builtin_ia32_adc(data[i],rg,carry);
        }
        while(!data.empty()&&data.back()==0)data.pop_back();
        return *this;
    }
    bigint &operator++(){return *this+=bigint(1);}
    bigint &operator--(){return *this-=bigint(1);}
    bigint operator++(int){bigint tmp=*this;++*this;return tmp;}
    bigint operator--(int){bigint tmp=*this;--*this;return tmp;}
    bigint &operator*=(const bigint &a){
        std::vector<u64> ret(data.size()+a.data.size());
        for(st i=0;i<data.size();i++){
            u64 carry=0;bool wcarry=0;
            st k=i;
            for(st j=0;j<a.data.size();j++,k++){
                u128 r=data[i]*(u128)a.data[j]+carry;
                u64 cur=r;
                carry=r>>64;
                __builtin_ia32_adc(ret[k],cur,wcarry);
            }
            while(carry||wcarry){
                __builtin_ia32_adc(ret[k],carry,wcarry);
                carry=0;k++;
            }
        }
        while(!ret.empty()&&ret.back()==0)ret.pop_back();
        data=ret;
        return *this;
    }
    bigint &operator/=(const bigint &a){
        if(a.digit()>digit()){
            data.clear();
            return *this;
        }
        st z=digit()-a.digit();
        std::vector<u64> ret;
        while(1){
            bigint tmp=a<<z;
            if(tmp<=*this){
                *this-=tmp;
                st v1=z>>6;
                if(ret.size()<=v1)ret.resize(v1+1);
                ret[v1]|=(u64)(1)<<(z&63);
            }
            if(!z)break;
            z--;
        }
        data=ret;
        return *this;
    }
    bigint &operator%=(const bigint &a){
        if(a.digit()>digit())return *this;
        st z=digit()-a.digit();
        while(1){
            bigint tmp=a<<z;
            if(tmp<=*this)*this-=tmp;
            if(!z)break;
            z--;
        }
        return *this;
    }
    bigint operator+(const bigint &a)const{return bigint(*this)+=a;}
    bigint operator-(const bigint &a)const{return bigint(*this)-=a;}
    bigint operator*(const bigint &a)const{return bigint(*this)*=a;}
    bigint operator/(const bigint &a)const{return bigint(*this)/=a;}
    bigint operator%(const bigint &a)const{return bigint(*this)%=a;}
};
std::istream &operator>>(std::istream &st,bigint &a){
    std::string s;st>>s;a=bigint(s);return st;
}
std::ostream &operator<<(std::ostream &st,const bigint &a){
    return st<<(std::string)(a);
}
bigint F[N+1];
int k,q,x,y;
bool used[N+1];
int main()
{
	string s;
	bigint maxn=1,n;
	for (int i=1;i<=100;++i) maxn*=10;
	F[1]=1;
	for (int i=2;i<=480;++i) F[i]=F[i-1]+F[i-2];
	puts("960");
	for (int i=1;i<=240;++i)
	{
		printf("%d %d\n",i,i);
		printf("%d %d\n",i+1,i);
		printf("%d %d\n",i,i+1);
		printf("%d %d\n",i,i+2);
	}
	k=read(),q=read(),x=read(),y=read();
	while (q--)
	{
		n=0,cin>>s;
		for (int i=0;i<s.length();++i) n=n*bigint(10)+s[i]-'0';
		for (int i=1;i<=960;++i) used[i]=0;
		for (int i=480;i>=1;--i)
			if (n>=F[i])
				n=n-F[i],used[i<<1]=1;
		for (int i=1;i<=960;++i) printf("%d",used[i]);
		puts("");
	}
	return 0;
}

详细

Subtask #1:

score: 5
Accepted

Test #1:

score: 5
Accepted
time: 38ms
memory: 3712kb

input:

3 999 1000 340
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
...

output:

960
1 1
2 1
1 2
1 3
2 2
3 2
2 3
2 4
3 3
4 3
3 4
3 5
4 4
5 4
4 5
4 6
5 5
6 5
5 6
5 7
6 6
7 6
6 7
6 8
7 7
8 7
7 8
7 9
8 8
9 8
8 9
8 10
9 9
10 9
9 10
9 11
10 10
11 10
10 11
10 12
11 11
12 11
11 12
11 13
12 12
13 12
12 13
12 14
13 13
14 13
13 14
13 15
14 14
15 14
14 15
14 16
15 15
16 15
15 16
15 17
16 1...

result:

ok correct

Subtask #2:

score: 10
Accepted

Test #2:

score: 10
Accepted
time: 377ms
memory: 3712kb

input:

12 10000 1000 340
358908473750
36343501002
904324605639
453955046266
725478753662
218319365131
882878650993
648345848966
474401697383
722377018680
718743783955
748051292505
167886140898
411111004914
327825244967
990026144963
623309580364
970889332700
319445927842
527624602835
453135227321
1153226125...

output:

960
1 1
2 1
1 2
1 3
2 2
3 2
2 3
2 4
3 3
4 3
3 4
3 5
4 4
5 4
4 5
4 6
5 5
6 5
5 6
5 7
6 6
7 6
6 7
6 8
7 7
8 7
7 8
7 9
8 8
9 8
8 9
8 10
9 9
10 9
9 10
9 11
10 10
11 10
10 11
10 12
11 11
12 11
11 12
11 13
12 12
13 12
12 13
12 14
13 13
14 13
13 14
13 15
14 14
15 14
14 15
14 16
15 15
16 15
15 16
15 17
16 1...

result:

ok correct

Test #3:

score: 0
Accepted
time: 366ms
memory: 3668kb

input:

12 10000 1000 340
930556110177
377904923573
36236934395
488122716493
51121341209
392176146788
323693311937
449196823461
336471392319
92713238333
281418059653
761936598942
293730650349
106748001462
609643804851
703543108800
999258707162
376689099489
435462123411
710775118008
45582546742
835557591196
...

output:

960
1 1
2 1
1 2
1 3
2 2
3 2
2 3
2 4
3 3
4 3
3 4
3 5
4 4
5 4
4 5
4 6
5 5
6 5
5 6
5 7
6 6
7 6
6 7
6 8
7 7
8 7
7 8
7 9
8 8
9 8
8 9
8 10
9 9
10 9
9 10
9 11
10 10
11 10
10 11
10 12
11 11
12 11
11 12
11 13
12 12
13 12
12 13
12 14
13 13
14 13
13 14
13 15
14 14
15 14
14 15
14 16
15 15
16 15
15 16
15 17
16 1...

result:

ok correct

Test #4:

score: 0
Accepted
time: 365ms
memory: 3760kb

input:

12 10000 1000 340
737930395319
182266797635
731674395027
268811900200
40636281734
385606961047
579973266668
244481758021
889308913416
116731076438
760018797175
690646649762
295657481984
860132997501
798927396859
973501342055
371555705903
89078273643
755892420101
664745115837
527923357928
12789900388...

output:

960
1 1
2 1
1 2
1 3
2 2
3 2
2 3
2 4
3 3
4 3
3 4
3 5
4 4
5 4
4 5
4 6
5 5
6 5
5 6
5 7
6 6
7 6
6 7
6 8
7 7
8 7
7 8
7 9
8 8
9 8
8 9
8 10
9 9
10 9
9 10
9 11
10 10
11 10
10 11
10 12
11 11
12 11
11 12
11 13
12 12
13 12
12 13
12 14
13 13
14 13
13 14
13 15
14 14
15 14
14 15
14 16
15 15
16 15
15 16
15 17
16 1...

result:

ok correct

Subtask #3:

score: 10
Accepted

Test #5:

score: 10
Accepted
time: 609ms
memory: 3584kb

input:

100 10000 1000 340
87490023455826213450979333037504606824522062808297739018786336978222089712660133428564103979384831
874900289913204769749000879539227331559680630241808944569515663934025397982898503777823815274323967
8749002899116133353924895735921513229471979456689635148877567298640178774668643967...

output:

960
1 1
2 1
1 2
1 3
2 2
3 2
2 3
2 4
3 3
4 3
3 4
3 5
4 4
5 4
4 5
4 6
5 5
6 5
5 6
5 7
6 6
7 6
6 7
6 8
7 7
8 7
7 8
7 9
8 8
9 8
8 9
8 10
9 9
10 9
9 10
9 11
10 10
11 10
10 11
10 12
11 11
12 11
11 12
11 13
12 12
13 12
12 13
12 14
13 13
14 13
13 14
13 15
14 14
15 14
14 15
14 16
15 15
16 15
15 16
15 17
16 1...

result:

ok correct

Test #6:

score: 0
Accepted
time: 586ms
memory: 3836kb

input:

100 10000 1000 340
8748936149282545611299720421204578485624739530690115026507467181657344327662766924981916612956258303
8714827106557313136171687656546075434718184787427526246530142735325290665843132579235229445895749631
8749002377650837755861570823748389228611868494396845969260163830921683752297192...

output:

960
1 1
2 1
1 2
1 3
2 2
3 2
2 3
2 4
3 3
4 3
3 4
3 5
4 4
5 4
4 5
4 6
5 5
6 5
5 6
5 7
6 6
7 6
6 7
6 8
7 7
8 7
7 8
7 9
8 8
9 8
8 9
8 10
9 9
10 9
9 10
9 11
10 10
11 10
10 11
10 12
11 11
12 11
11 12
11 13
12 12
13 12
12 13
12 14
13 13
14 13
13 14
13 15
14 14
15 14
14 15
14 16
15 15
16 15
15 16
15 17
16 1...

result:

ok correct

Subtask #4:

score: 10
Accepted

Test #7:

score: 10
Accepted
time: 585ms
memory: 3732kb

input:

100 10000 990 310
4083451712318559926139496762164571032902328806667934236880329773320213539959944736095945843081512968
7811890641057562314768022152641517082686481268288006737090208624016586608183953908313798353213188661
97358161226180890688421784730819518002666166790210320310558753031161862165361257...

output:

960
1 1
2 1
1 2
1 3
2 2
3 2
2 3
2 4
3 3
4 3
3 4
3 5
4 4
5 4
4 5
4 6
5 5
6 5
5 6
5 7
6 6
7 6
6 7
6 8
7 7
8 7
7 8
7 9
8 8
9 8
8 9
8 10
9 9
10 9
9 10
9 11
10 10
11 10
10 11
10 12
11 11
12 11
11 12
11 13
12 12
13 12
12 13
12 14
13 13
14 13
13 14
13 15
14 14
15 14
14 15
14 16
15 15
16 15
15 16
15 17
16 1...

result:

ok correct

Test #8:

score: 0
Accepted
time: 582ms
memory: 3772kb

input:

100 10000 990 310
536242740270410789572341652869398338093269589584059146826540461135298742334471009085914940446278287
4201975342869797382342066007535560618192359692007374881623572540610172361008282611340412383037024069
963134484370112575147508066354646119797740257454037562403391582920830075099761880...

output:

960
1 1
2 1
1 2
1 3
2 2
3 2
2 3
2 4
3 3
4 3
3 4
3 5
4 4
5 4
4 5
4 6
5 5
6 5
5 6
5 7
6 6
7 6
6 7
6 8
7 7
8 7
7 8
7 9
8 8
9 8
8 9
8 10
9 9
10 9
9 10
9 11
10 10
11 10
10 11
10 12
11 11
12 11
11 12
11 13
12 12
13 12
12 13
12 14
13 13
14 13
13 14
13 15
14 14
15 14
14 15
14 16
15 15
16 15
15 16
15 17
16 1...

result:

ok correct

Subtask #5:

score: 10
Accepted

Test #9:

score: 10
Accepted
time: 581ms
memory: 3652kb

input:

100 10000 1050 260
8749002899132047697490008908470485461412677723566863434996575047286849703722697797645542008396185599
8749002899132047697490008908470485461412677699052921091826559946707718798046219210886366418022957055
7655377536740541735303757766642121742076255665128332760334129720709510994307378...

output:

960
1 1
2 1
1 2
1 3
2 2
3 2
2 3
2 4
3 3
4 3
3 4
3 5
4 4
5 4
4 5
4 6
5 5
6 5
5 6
5 7
6 6
7 6
6 7
6 8
7 7
8 7
7 8
7 9
8 8
9 8
8 9
8 10
9 9
10 9
9 10
9 11
10 10
11 10
10 11
10 12
11 11
12 11
11 12
11 13
12 12
13 12
12 13
12 14
13 13
14 13
13 14
13 15
14 14
15 14
14 15
14 16
15 15
16 15
15 16
15 17
16 1...

result:

ok correct

Test #10:

score: 0
Accepted
time: 577ms
memory: 3652kb

input:

100 10000 1050 260
8749002899132047697490008908470485461412677723572849745703082425639811996797503692892926808185372671
874900289913204769701566661490981966686019183484759731181812123183820701469425350909196577361887231
87490028991280691115987306153332424033768113943575511927837611721527450026923859...

output:

960
1 1
2 1
1 2
1 3
2 2
3 2
2 3
2 4
3 3
4 3
3 4
3 5
4 4
5 4
4 5
4 6
5 5
6 5
5 6
5 7
6 6
7 6
6 7
6 8
7 7
8 7
7 8
7 9
8 8
9 8
8 9
8 10
9 9
10 9
9 10
9 11
10 10
11 10
10 11
10 12
11 11
12 11
11 12
11 13
12 12
13 12
12 13
12 14
13 13
14 13
13 14
13 15
14 14
15 14
14 15
14 16
15 15
16 15
15 16
15 17
16 1...

result:

ok correct

Subtask #6:

score: 10
Accepted

Test #11:

score: 10
Accepted
time: 575ms
memory: 3704kb

input:

100 10000 1050 240
8749002899132047697490008908470485461412677723572849734285100881333676956761384191490477496469520383
874886939179415873527191365288672777702448917037688119492655525651250910013304087281579324577152991
87490028991320476974900089084704854614126777235728490149522637601883528949454159...

output:

960
1 1
2 1
1 2
1 3
2 2
3 2
2 3
2 4
3 3
4 3
3 4
3 5
4 4
5 4
4 5
4 6
5 5
6 5
5 6
5 7
6 6
7 6
6 7
6 8
7 7
8 7
7 8
7 9
8 8
9 8
8 9
8 10
9 9
10 9
9 10
9 11
10 10
11 10
10 11
10 12
11 11
12 11
11 12
11 13
12 12
13 12
12 13
12 14
13 13
14 13
13 14
13 15
14 14
15 14
14 15
14 16
15 15
16 15
15 16
15 17
16 1...

result:

ok correct

Test #12:

score: 0
Accepted
time: 580ms
memory: 3648kb

input:

100 10000 1050 240
8748869399942302640609859219613849864404711585518072959767189754493152526763381301362784876544131071
8749002898113529709322765865336262617207988643047115548870114300321741770881768540817196765514039295
8749002899132047697490008908470485448242213512826165447361161116479336307579296...

output:

960
1 1
2 1
1 2
1 3
2 2
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2 4
3 3
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3 4
3 5
4 4
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13 14
13 15
14 14
15 14
14 15
14 16
15 15
16 15
15 16
15 17
16 1...

result:

ok correct

Subtask #7:

score: 20
Accepted

Test #13:

score: 20
Accepted
time: 1ms
memory: 3700kb

input:

100 1 980 260
8749002899132047697490008908470485461309833682610292204604841418296589481615503153703163411103219711

output:

960
1 1
2 1
1 2
1 3
2 2
3 2
2 3
2 4
3 3
4 3
3 4
3 5
4 4
5 4
4 5
4 6
5 5
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12 14
13 13
14 13
13 14
13 15
14 14
15 14
14 15
14 16
15 15
16 15
15 16
15 17
16 1...

result:

ok correct

Test #14:

score: 0
Accepted
time: 1ms
memory: 3660kb

input:

100 1 980 260
26140399507039494187363454808469075954177491358550589658445256177636481188801043146566104810349008

output:

960
1 1
2 1
1 2
1 3
2 2
3 2
2 3
2 4
3 3
4 3
3 4
3 5
4 4
5 4
4 5
4 6
5 5
6 5
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12 14
13 13
14 13
13 14
13 15
14 14
15 14
14 15
14 16
15 15
16 15
15 16
15 17
16 1...

result:

ok correct

Test #15:

score: 0
Accepted
time: 1ms
memory: 3696kb

input:

100 1 980 260
2916334299201423571746379638671656065302994540964775389402649871877310689655011516150737480170427669

output:

960
1 1
2 1
1 2
1 3
2 2
3 2
2 3
2 4
3 3
4 3
3 4
3 5
4 4
5 4
4 5
4 6
5 5
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5 6
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13 12
12 13
12 14
13 13
14 13
13 14
13 15
14 14
15 14
14 15
14 16
15 15
16 15
15 16
15 17
16 1...

result:

ok correct

Test #16:

score: 0
Accepted
time: 1ms
memory: 3660kb

input:

100 1 980 260
133733063818254349335501779590031438654517135520213587361323145147457390997763303065570586431533875

output:

960
1 1
2 1
1 2
1 3
2 2
3 2
2 3
2 4
3 3
4 3
3 4
3 5
4 4
5 4
4 5
4 6
5 5
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11 12
11 13
12 12
13 12
12 13
12 14
13 13
14 13
13 14
13 15
14 14
15 14
14 15
14 16
15 15
16 15
15 16
15 17
16 1...

result:

ok correct

Test #17:

score: 0
Accepted
time: 1ms
memory: 3776kb

input:

100 1 980 260
9216845717656874712980450562726202415567360565980794777111390850331644813674856981646960226192287360

output:

960
1 1
2 1
1 2
1 3
2 2
3 2
2 3
2 4
3 3
4 3
3 4
3 5
4 4
5 4
4 5
4 6
5 5
6 5
5 6
5 7
6 6
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12 11
11 12
11 13
12 12
13 12
12 13
12 14
13 13
14 13
13 14
13 15
14 14
15 14
14 15
14 16
15 15
16 15
15 16
15 17
16 1...

result:

ok correct

Test #18:

score: 0
Accepted
time: 0ms
memory: 3700kb

input:

100 1 980 260
5264952002436106359851318041422054633517706683530105573021775026464088057584242164048188378737906836

output:

960
1 1
2 1
1 2
1 3
2 2
3 2
2 3
2 4
3 3
4 3
3 4
3 5
4 4
5 4
4 5
4 6
5 5
6 5
5 6
5 7
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11 11
12 11
11 12
11 13
12 12
13 12
12 13
12 14
13 13
14 13
13 14
13 15
14 14
15 14
14 15
14 16
15 15
16 15
15 16
15 17
16 1...

result:

ok correct

Subtask #8:

score: 25
Accepted

Test #19:

score: 25
Accepted
time: 574ms
memory: 3648kb

input:

100 10000 960 240
8749002899132047697015724510954438324957730968977252383122989921226002617013223698533483281626692607
8749002899132047697490008908470485461412677720507858663971304708923117942496885325656574463725010943
87148271065573131361716885470369961093519598137825155235803895087505468828694702...

output:

960
1 1
2 1
1 2
1 3
2 2
3 2
2 3
2 4
3 3
4 3
3 4
3 5
4 4
5 4
4 5
4 6
5 5
6 5
5 6
5 7
6 6
7 6
6 7
6 8
7 7
8 7
7 8
7 9
8 8
9 8
8 9
8 10
9 9
10 9
9 10
9 11
10 10
11 10
10 11
10 12
11 11
12 11
11 12
11 13
12 12
13 12
12 13
12 14
13 13
14 13
13 14
13 15
14 14
15 14
14 15
14 16
15 15
16 15
15 16
15 17
16 1...

result:

ok correct

Test #20:

score: 0
Accepted
time: 572ms
memory: 3704kb

input:

100 10000 960 240
87490028991320476974751875210481089883984606374917376934978638676026103357677379577201035900354559
874900289913204769748997996044817613236382183082659757372611910814364558665649382849850729809805311
87490028979301854287209922417527640508689863212316623120229713820718860216280007473...

output:

960
1 1
2 1
1 2
1 3
2 2
3 2
2 3
2 4
3 3
4 3
3 4
3 5
4 4
5 4
4 5
4 6
5 5
6 5
5 6
5 7
6 6
7 6
6 7
6 8
7 7
8 7
7 8
7 9
8 8
9 8
8 9
8 10
9 9
10 9
9 10
9 11
10 10
11 10
10 11
10 12
11 11
12 11
11 12
11 13
12 12
13 12
12 13
12 14
13 13
14 13
13 14
13 15
14 14
15 14
14 15
14 16
15 15
16 15
15 16
15 17
16 1...

result:

ok correct