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QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#498086#8712. Flooding WallSirPh17 2838ms785756kbC++204.1kb2024-07-29 22:52:352024-07-29 22:52:35

Judging History

This is the latest submission verdict.

  • [2024-07-29 22:52:35]
  • Judged
  • Verdict: 17
  • Time: 2838ms
  • Memory: 785756kb
  • [2024-07-29 22:52:35]
  • Submitted

answer

#include<bits/stdc++.h>
#define endl '\n'
using namespace std;
const int mod=(int)1e9+7;
int dpl[2][20003];
int pref[2][20003];
int dpr[10003][20003];
vector<int>hi;
int arr[10000+1];
int brr[10000+1];
int getsuml(int i,int l,int r)
{
    i&=1;
    if((pref[i][r]-pref[i][l-1]+mod)>=mod)return(pref[i][r]-pref[i][l-1]);
    else return (pref[i][r]-pref[i][l-1]+mod);
}
int getsumr(int i,int l,int r)
{
    if((dpr[i][r]-dpr[i][l-1]+mod)>=mod)return (dpr[i][r]-dpr[i][l-1]);
    else return (dpr[i][r]-dpr[i][l-1]+mod);
}
signed main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    int n;
    cin>>n;
    for(int i=1;i<=n;i++)cin>>arr[i];
    for(int i=1;i<=n;i++){
        cin>>brr[i];
        if(arr[i]>brr[i])swap(arr[i],brr[i]);
    }
    for(int i=1;i<=n;i++)hi.push_back(arr[i]);
    for(int i=1;i<=n;i++)hi.push_back(brr[i]);
    hi.push_back(0);
    sort(hi.begin(),hi.end());
    hi.erase(unique(hi.begin(),hi.end()));
    int a7a=hi.size()-1;
    int ans=0;
    // cout<<dpl.size();
    // return 0;
    dpr[n+1][0]=1;
    for(int i=n;i>=1;i--)
    {
        arr[i]=lower_bound(hi.begin(),hi.end(),arr[i])-hi.begin(),brr[i]=lower_bound(hi.begin(),hi.end(),brr[i])-hi.begin();
        for(int j=arr[i];j>=0;j--)
        {
            if(dpr[i+1][j]==0)continue;
            dpr[i][arr[i]]+=dpr[i+1][j];
            dpr[i][arr[i]]%=mod;
        }
        for(int j=arr[i]+1;j<=a7a;j++)
        {
            if(dpr[i+1][j]==0)continue;
            dpr[i][j]+=dpr[i+1][j];
            dpr[i][j]%=mod;
        }
        for(int j=brr[i];j>=0;j--)
        {
            if(dpr[i+1][j]==0)continue;
            dpr[i][brr[i]]+=dpr[i+1][j];
            dpr[i][brr[i]]%=mod;
        }
        for(int j=brr[i]+1;j<=a7a;j++)
        {
            if(dpr[i+1][j]==0)continue;
            dpr[i][j]+=dpr[i+1][j];
            dpr[i][j]%=mod;
        }
    }
    dpl[0][0]=1;
    pref[0][0]=1;
    for(int i=0;i<=n+1;i++)
        for(int j=1;j<=a7a;j++){
        pref[0][j]=dpl[0][j]+pref[0][j-1];
        if(pref[0][j]>=mod)
        pref[0][j]-=mod;
        dpr[i][j]+=dpr[i][j-1];
        if(dpr[i][j]>=mod)
        dpr[i][j]-=mod;
    }
    for(int i=1;i<=n;i++)
    {
        for(int j=0;j<=a7a;j++)dpl[i%2][j]=0,pref[i%2][j]=0;
        for(int j=arr[i];j>=0;j--)
        {
            if(dpl[(i&1)^1][j]==0)continue;
            dpl[i&1][arr[i]]+=dpl[(i&1)^1][j];
            dpl[i&1][arr[i]]%=mod;
        }
        for(int j=arr[i]+1;j<=a7a;j++)
        {
            if(dpl[(i&1)^1][j]==0)continue;
            dpl[i&1][j]+=dpl[(i&1)^1][j];
            dpl[i&1][j]%=mod;
        }
        for(int j=brr[i];j>=0;j--)
        {
            if(dpl[(i&1)^1][j]==0)continue;
            dpl[i&1][brr[i]]+=dpl[(i&1)^1][j];
            dpl[i&1][brr[i]]%=mod;
        }
        for(int j=brr[i]+1;j<=a7a;j++)
        {
            if(dpl[(i&1)^1][j]==0)continue;
            dpl[i&1][j]+=dpl[(i&1)^1][j];
            dpl[i&1][j]%=mod;
        }
        pref[i&1][0]=dpl[i&1][0];
        for(int j=1;j<=a7a;j++){
            pref[i&1][j]=dpl[i&1][j]+pref[i&1][j-1];
            if(pref[i&1][j]>=mod)
            pref[i&1][j]-=mod;
        }
        for(int j=arr[i];j<=a7a;j++)
        {
            long long x=getsuml(i-1,j,j);
            x*=getsumr(i+1,j,a7a);
            x%=mod;
            ans+=((hi[j]-hi[arr[i]])*x)%mod;
            if(ans>=mod)ans-=mod;
            x=getsumr(i+1,j,j);
            x*=getsuml(i-1,j+1,a7a);
            x%=mod;
            ans+=((hi[j]-hi[arr[i]])*x)%mod;
            if(ans>=mod)ans-=mod;
            if(j>=brr[i])
            {
                x=getsuml(i-1,j,j);
                x*=getsumr(i+1,j,a7a);
                x%=mod;
                ans+=((hi[j]-hi[brr[i]])*x)%mod;
                if(ans>=mod)ans-=mod;
                x=getsumr(i+1,j,j);
                x*=getsuml(i-1,j+1,a7a);
                x%=mod;
                ans+=((hi[j]-hi[brr[i]])*x)%mod;
                if(ans>=mod)ans-=mod;
            }
        }
    }  
    cout<<ans<<endl;
}

Details

Tip: Click on the bar to expand more detailed information

Subtask #1:

score: 0
Wrong Answer

Test #1:

score: 8
Accepted
time: 0ms
memory: 5776kb

input:

4
1 1 1 1
2 2 2 2

output:

6

result:

ok single line: '6'

Test #2:

score: 8
Accepted
time: 1ms
memory: 5736kb

input:

10
1 2 3 4 5 6 7 8 9 10
10 9 8 7 6 5 4 3 2 1

output:

21116

result:

ok single line: '21116'

Test #3:

score: 8
Accepted
time: 1ms
memory: 5620kb

input:

1
1
2

output:

0

result:

ok single line: '0'

Test #4:

score: 8
Accepted
time: 0ms
memory: 3648kb

input:

2
1 1
2 2

output:

0

result:

ok single line: '0'

Test #5:

score: 8
Accepted
time: 0ms
memory: 3672kb

input:

3
1 1 1
2 2 2

output:

1

result:

ok single line: '1'

Test #6:

score: 8
Accepted
time: 0ms
memory: 3720kb

input:

3
1 1 1
3 2 3

output:

3

result:

ok single line: '3'

Test #7:

score: 8
Accepted
time: 0ms
memory: 3648kb

input:

3
2 1 1
3 2 3

output:

4

result:

ok single line: '4'

Test #8:

score: 8
Accepted
time: 0ms
memory: 3684kb

input:

3
1 1 2
3 2 3

output:

4

result:

ok single line: '4'

Test #9:

score: 8
Accepted
time: 0ms
memory: 3680kb

input:

4
1 1 2 2
2 2 1 1

output:

6

result:

ok single line: '6'

Test #10:

score: 8
Accepted
time: 0ms
memory: 3596kb

input:

3
1 4 4
3 1 1

output:

2

result:

ok single line: '2'

Test #11:

score: 0
Wrong Answer
time: 1ms
memory: 5672kb

input:

20
801072306 297281669 94099424 745640358 822582129 579751930 776707816 425952653 529794053 256263083 615445445 401366545 990263003 967996508 788867983 916880116 837997768 346996508 623409388 122077161
141734988 448434751 822901346 825591177 388082644 468025968 260356829 1164654 537396602 730502935 ...

output:

291268034

result:

wrong answer 1st lines differ - expected: '840988190', found: '291268034'

Subtask #2:

score: 17
Accepted

Test #23:

score: 17
Accepted
time: 1ms
memory: 6068kb

input:

100
948 425 211 688 416 81 356 602 712 954 117 522 797 75 281 491 662 669 78 156 939 526 929 937 916 619 166 777 48 898 449 278 298 714 668 755 679 38 389 602 195 135 672 833 655 541 473 27 596 274 351 353 598 993 837 246 950 99 179 751 481 843 550 195 964 279 806 82 330 599 124 756 649 838 513 625 ...

output:

164439470

result:

ok single line: '164439470'

Test #24:

score: 17
Accepted
time: 1ms
memory: 6064kb

input:

99
426 562 392 187 480 118 86 459 941 159 104 108 323 616 104 679 464 929 60 387 335 298 540 352 520 152 76 233 69 50 422 839 236 113 79 782 44 253 791 857 393 767 297 267 23 523 274 514 489 58 217 361 408 753 990 491 787 529 759 351 668 348 811 737 764 672 471 115 815 701 604 348 708 512 227 707 20...

output:

295469554

result:

ok single line: '295469554'

Test #25:

score: 17
Accepted
time: 1ms
memory: 6144kb

input:

100
2 1 1 2 2 2 2 1 2 2 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 1 2 1 1 2 1 2 2 1 2 2 2 1 1 1 1 2 2 2 2 2 2 2 1 2 1 1 1 1 2 2 2 2 2 2 1 2 1 2 1 2 2 1 1 2 2 1 1 2 1 2 2 2 1 1 1 1 1 1 2 2 1 2 1 1 2 1 1 1 2 1 1 2 2 1
1 2 2 1 1 1 1 2 1 1 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 2 1 2 2 1 2 1 1 2 1 1 1 2 2 2 2 1 1 1 1 1 1 1 ...

output:

865821460

result:

ok single line: '865821460'

Test #26:

score: 17
Accepted
time: 1ms
memory: 6080kb

input:

97
2 1 2 1 1 1 2 2 2 1 2 1 2 1 2 2 1 1 2 1 1 1 1 2 2 2 1 1 1 2 1 2 2 2 1 1 1 1 2 2 1 1 1 1 1 1 1 1 2 2 1 2 2 1 1 1 2 1 2 2 2 2 2 1 2 1 1 2 1 1 2 2 2 2 1 2 2 1 1 1 1 2 1 2 2 2 1 1 2 2 1 1 2 2 1 2 2
1 2 1 2 2 2 1 1 1 2 1 2 1 2 1 1 2 2 1 2 2 2 2 1 1 1 2 2 2 1 2 1 1 1 2 2 2 2 1 1 2 2 2 2 2 2 2 2 1 1 2 1...

output:

237658155

result:

ok single line: '237658155'

Test #27:

score: 17
Accepted
time: 1ms
memory: 6144kb

input:

100
2 7 7 7 10 10 5 3 8 7 4 4 3 3 9 9 3 4 10 10 2 2 8 6 8 5 8 5 6 5 9 7 9 4 9 4 2 6 4 7 8 8 1 4 2 4 5 3 6 8 2 5 6 1 4 10 10 1 8 7 4 9 2 8 9 5 7 8 9 8 3 5 4 7 6 3 3 1 9 4 1 4 9 1 10 3 3 9 10 7 7 8 5 8 4 10 8 4 1 4
6 8 5 8 9 2 9 9 7 3 10 1 4 10 7 1 4 1 6 8 5 7 7 7 9 3 2 3 1 9 7 2 6 5 7 9 10 1 8 1 2 6 ...

output:

12245240

result:

ok single line: '12245240'

Test #28:

score: 17
Accepted
time: 0ms
memory: 6180kb

input:

100
996 996 998 996 997 996 995 998 991 996 997 1000 992 1000 995 999 1000 999 998 992 995 998 994 996 994 994 995 1000 992 992 1000 994 993 999 997 997 997 1000 991 994 995 999 1000 999 994 992 997 992 999 992 992 1000 999 996 995 992 999 993 997 993 992 997 991 992 992 995 992 994 998 1000 998 100...

output:

699955927

result:

ok single line: '699955927'

Test #29:

score: 17
Accepted
time: 0ms
memory: 8196kb

input:

100
991 6 5 1 8 3 10 10 7 2 8 10 4 9 6 8 1 2 9 6 7 8 8 1 9 5 8 2 5 2 6 1 8 9 9 1 5 9 2 7 8 6 10 8 1 10 3 4 5 5 5 1 1 4 5 7 7 7 3 7 8 4 7 4 4 10 3 1 4 7 7 6 4 3 3 4 4 1 4 9 3 7 9 5 4 3 3 5 7 7 8 10 3 6 4 10 4 5 3 991
994 1 8 5 1 5 7 3 3 4 3 1 6 2 1 4 10 5 8 8 5 7 9 6 4 2 9 3 2 4 3 8 7 1 4 7 9 7 1 4 7...

output:

823274616

result:

ok single line: '823274616'

Test #30:

score: 17
Accepted
time: 0ms
memory: 6080kb

input:

95
3 1 9 8 2 3 7 1 9 9 10 1 1 10 10 9 9 2 4 9 6 7 10 2 8 8 2 4 7 4 9 4 2 10 1 6 1 8 9 5 2 4 1 9 3 1 10 4 10 4 3 7 1 7 9 2 10 2 5 5 4 8 4 7 8 8 2 7 3 3 9 3 9 10 5 3 2 7 10 3 10 9 1 1 1 9 7 10 2 6 5 7 10 7 10
5 7 4 3 9 9 9 4 10 1 6 5 7 6 9 3 10 3 3 3 9 2 5 5 10 10 7 8 2 7 5 5 6 6 6 10 5 6 5 6 4 10 2 8...

output:

39455183

result:

ok single line: '39455183'

Test #31:

score: 17
Accepted
time: 1ms
memory: 6044kb

input:

99
991 1000 999 997 991 997 991 998 993 993 991 997 998 998 993 991 995 999 1000 995 994 991 994 998 1000 995 997 995 996 998 997 994 997 997 993 993 999 993 998 997 998 994 998 999 998 992 991 996 1000 1000 995 994 997 997 1000 995 993 996 994 993 996 997 991 991 993 992 996 1000 994 1000 993 998 9...

output:

177632228

result:

ok single line: '177632228'

Test #32:

score: 17
Accepted
time: 1ms
memory: 8072kb

input:

93
998 9 4 6 6 3 7 6 6 2 3 1 1 4 3 4 3 10 1 7 6 6 7 2 1 6 2 7 5 10 10 5 3 6 9 3 7 8 2 4 2 5 8 4 9 8 9 6 6 10 9 8 5 9 6 7 8 6 10 4 3 4 2 10 3 6 6 3 3 7 1 5 8 8 2 4 3 6 5 4 4 9 2 4 4 10 10 5 3 4 6 5 998
991 3 7 1 2 7 4 4 7 4 8 3 7 7 6 6 1 8 3 8 2 4 9 7 2 1 6 8 4 6 1 9 6 2 8 8 5 1 5 1 6 1 2 8 1 7 7 10 ...

output:

19480584

result:

ok single line: '19480584'

Test #33:

score: 17
Accepted
time: 1ms
memory: 6056kb

input:

100
8 4 962 943 7 905 886 867 848 4 810 9 772 1 10 9 8 677 658 639 2 601 6 563 544 1 506 487 3 5 3 1 392 5 354 335 316 297 10 259 240 221 5 183 164 10 126 10 9 9 50 69 88 3 126 145 164 1 202 6 8 9 8 1 316 335 354 6 3 411 5 9 468 487 506 10 544 2 582 601 620 6 658 677 8 715 8 2 4 2 7 4 7 2 886 905 9 ...

output:

224554505

result:

ok single line: '224554505'

Test #34:

score: 17
Accepted
time: 1ms
memory: 8028kb

input:

97
8 980 2 940 920 900 880 8 5 820 5 2 7 740 5 700 9 8 640 4 8 8 3 540 520 500 7 460 7 420 9 380 10 3 6 300 280 7 240 220 200 180 10 140 4 3 80 60 7 60 10 1 7 140 160 5 200 4 10 2 280 1 3 10 360 5 400 7 9 1 480 7 520 8 560 9 8 620 640 5 680 700 720 6 7 780 1 9 3 4 9 8 920 940 960 7 9
1000 8 960 3 4 ...

output:

11356755

result:

ok single line: '11356755'

Subtask #3:

score: 0
Time Limit Exceeded

Dependency #2:

100%
Accepted

Test #35:

score: 19
Accepted
time: 2829ms
memory: 785756kb

input:

10000
723 904 141 407 718 128 268 838 287 173 507 490 602 335 475 954 785 148 163 452 709 394 16 817 80 850 830 464 419 833 306 591 731 966 380 514 365 563 290 58 620 883 384 413 312 996 203 57 954 951 996 176 352 789 531 233 697 231 230 730 482 891 67 514 75 259 673 241 851 957 928 891 510 592 290 ...

output:

357364262

result:

ok single line: '357364262'

Test #36:

score: 19
Accepted
time: 2838ms
memory: 785360kb

input:

9995
141 696 412 803 219 794 458 520 884 453 444 885 902 857 677 266 505 768 741 426 249 274 745 514 683 937 18 814 407 618 545 960 695 294 858 150 198 930 27 458 214 159 57 238 39 376 404 957 622 73 858 400 690 32 263 998 526 408 667 361 792 272 839 676 207 728 172 567 262 715 424 845 164 426 518 6...

output:

58777672

result:

ok single line: '58777672'

Test #37:

score: 0
Time Limit Exceeded

input:

10000
2 1 2 2 1 1 1 2 2 1 1 1 2 2 2 1 2 2 2 2 2 1 2 1 1 1 1 1 2 2 1 2 1 2 2 2 1 1 1 1 2 2 2 1 2 1 2 1 1 1 1 1 2 1 1 1 1 2 1 1 1 2 2 2 1 1 2 1 2 2 2 1 1 2 2 2 2 1 2 2 2 1 2 2 1 1 2 1 2 1 2 1 2 1 1 2 2 2 1 2 1 2 2 1 1 1 2 2 2 1 1 1 1 1 2 2 2 2 2 2 1 1 2 2 1 2 1 1 2 2 2 2 2 1 2 2 1 2 1 2 2 1 2 1 1 1 1 ...

output:


result:


Subtask #4:

score: 0
Skipped

Dependency #1:

0%

Subtask #5:

score: 0
Runtime Error

Test #57:

score: 0
Runtime Error

input:

500000
1 1 1 1 2 2 2 1 1 1 1 1 2 2 1 1 2 2 2 2 1 2 1 1 2 1 1 1 1 2 1 2 2 1 1 2 2 2 1 1 2 2 2 2 1 2 2 2 2 1 2 2 2 1 2 2 2 1 2 2 2 2 2 2 2 2 1 1 2 1 2 1 2 2 1 2 2 2 2 2 2 2 1 1 1 2 2 2 1 1 2 1 2 2 1 2 2 1 2 2 2 1 2 2 2 2 2 2 2 2 1 1 1 2 1 2 1 1 2 1 2 1 2 2 1 1 2 1 1 1 1 1 2 2 2 2 2 2 1 2 2 1 1 2 1 2 1...

output:


result:


Subtask #6:

score: 0
Skipped

Dependency #1:

0%