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QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#689974#5414. Stop, Yesterday Please No MoreblackfrogAC ✓96ms47968kbC++143.5kb2024-10-30 19:29:252024-10-30 19:29:30

Judging History

你现在查看的是最新测评结果

  • [2024-10-30 19:29:30]
  • 评测
  • 测评结果:AC
  • 用时:96ms
  • 内存:47968kb
  • [2024-10-30 19:29:25]
  • 提交

answer

#include<iostream>
#include<algorithm>
#include<cmath>
using namespace std;
#define im INT_MAX;
int n,m,k;
int kil[2145][2145],prelu[2145][2145];
struct vec{int x;int y;}op[1145141];
bool lpc(vec i,vec j){
    if(i.x==j.x)return i.y<j.y;
    return i.x<j.x;
}
void solve(){
    cin>>n>>m>>k;
    string s;cin>>s;
    vec cur;cur.x=0;cur.y=0;
    op[1]=cur;
    for(int i=0;i<s.length();i++){
        if(s[i]=='U')cur.x++;
        if(s[i]=='D')cur.x--;
        if(s[i]=='L')cur.y++;
        if(s[i]=='R')cur.y--;
        op[i+2]=cur;
    }
    int cntop=s.length()+1;
    sort(op+1,op+cntop+1,lpc);

    // for(int i=1;i<=cntop;i++){
    //     cout<<"x    "<<op[i].x<<"   y   "<<op[i].y<<"\n";
    // }
    // cout<<"\n\n\n";

    int addx=n,addy=m;
    for(int i=1;i<=cntop;i++){
        op[i].x+=addx;
        op[i].y+=addy;
    }
    int ml=1,mr=m,mu=1,md=n;
    int curl=1,curr=m,curu=1,curd=n;
    for(int i=0;i<s.length();i++){
        if(s[i]=='U')curu++,curd++;
        if(s[i]=='D')curu--,curd--;
        if(s[i]=='L')curr++,curl++;
        if(s[i]=='R')curr--,curl--;
        ml=max(curl,ml);
        mr=min(curr,mr);
        mu=max(curu,mu);
        md=min(curd,md);
    }
    if((ml>m)||(mr<1)||(mu>n)||(md<1)||(mr<ml)||(md<mu)){
        if(k==0)cout<<n*m<<"\n";else cout<<"0\n";return;
    }
    // cout<<ml<<" "<<mr<<" "<<mu<<" "<<md<<"\n\n\n";

    int holx=n,holy=m;
    for(int i=0;i<=2*n;i++){
        for(int j=0;j<=2*m;j++){
            kil[i][j]=prelu[i][j]=/*preru[i][j]=preld[i][j]=prerd[i][j]=*/0;
        }
    }
    for(int i=1;i<=cntop;i++){
        if(op[i].x<1 || op[i].x>2*n-1 || op[i].y<1 || op[i].y>2*m-1)continue;
        kil[op[i].x][op[i].y]=1;
    }
    // for(int i=1;i<=2*n-1;i++){
    //     for(int j=1;j<=2*m-1;j++){
    //         cout<<kil[i][j]<<" ";
    //     }
    //     cout<<"\n";
    // }
    // cout<<"\n\n\n";

    for(int i=1;i<=2*n-1;i++){
        for(int j=1;j<=2*m-1;j++){
            prelu[i][j]=prelu[i][j-1]+prelu[i-1][j]-prelu[i-1][j-1]+kil[i][j];
        }
    }


    // for(int i=1;i<=2*n-1;i++){
    //     for(int j=1;j<=2*m-1;j++){
    //         cout<<prelu[i][j]<<" ";
    //     }
    //     cout<<"\n";
    // }
    // cout<<"\n\n\n";


    // for(int i=2*n-1;i>=1;i--){
    //     for(int j=1;j<=2*m-1;j++){
    //         preld[i][j]=preld[i][j-1]+preld[i+1][j]-preld[i+1][j-1]+kil[i][j];
    //     }
    // }
    // for(int i=1;i<=2*n-1;i++){
    //     for(int j=2*m-1;j>=1;j--){
    //         preru[i][j]=preru[i][j+1]+preru[i-1][j]-preru[i-1][j+1]+kil[i][j];
    //     }
    // }
    // for(int i=2*n-1;i>=1;i--){
    //     for(int j=2*m-1;j>=1;j--){
    //         prerd[i][j]=prerd[i][j+1]+prerd[i+1][j]-prerd[i+1][j+1]+kil[i][j];
    //     }
    // }
    int nowalive=(mr-ml+1)*(md-mu+1);
    if(k>nowalive){
        cout<<"0\n";return;
    }
    int ans=0;
    for(int i=1;i<=n;i++){
        for(int j=1;j<=m;j++){
            vec rd;rd.x=md-i+n;rd.y=mr-j+m;
            vec ru;ru.x=mu-i+n;ru.y=mr-j+m;
            vec ld;ld.x=md-i+n;ld.y=ml-j+m;
            vec lu;lu.x=mu-i+n;lu.y=ml-j+m;
            int restalive=nowalive-(prelu[rd.x][rd.y]-prelu[ru.x-1][ru.y]-prelu[ld.x][ld.y-1]+prelu[lu.x-1][lu.y-1]);
            if(restalive==k)ans++;

            // if((i==1) && (j==2))cout<<"x    "<<rd.x<<"  y   "<<rd.y<<"\n\n\n";

        }
    }
    cout<<ans<<"\n";
}
int main(){
    ios::sync_with_stdio(0);
    int T;cin>>T;
    for(int jb=1;jb<=T;jb++){
        solve();
    }
    return 0;
}
/*



*/

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 1ms
memory: 7636kb

input:

3
4 5 3
ULDDRR
4 5 0
UUUUUUU
4 5 10
UUUUUUU

output:

2
20
0

result:

ok 3 number(s): "2 20 0"

Test #2:

score: 0
Accepted
time: 4ms
memory: 11780kb

input:

1060
19 12 0
UDLDDUUUUDDDLLRDUDUURULUUUDRDUDRDRLRLRLULULLLDLDDRLUUUURUUUDDRLLRUUUDULURUULLRDRLRDDURDUUURRRLURLRUULRRUDURDLUUURDLURDDLUUURDDRLLURRDLRUDLRDRLLRRDRDDLDRURRRLUDULLLRUUDLRRURRDLLRRRDLLRDDDLRLRURURDDDL
11 1 0
UR
3 18 33
UDRLR
17 11 132
RLDRDLDRUU
6 10 13
UULUDDLRDLUUDLDD
1 15 0
D
6 20 50
D...

output:

228
11
20
99
18
15
34
240
15
0
0
13
14
18
26
16
1
19
108
8
2
2
3
7
0
30
16
21
0
8
10
9
15
5
320
11
7
3
0
0
12
0
11
0
0
14
0
22
36
51
23
7
6
4
2
48
28
8
63
22
49
13
10
4
108
10
18
44
0
15
9
0
4
30
14
99
105
10
14
17
0
66
10
11
28
52
34
56
33
14
56
90
14
0
121
3
48
30
36
13
0
30
7
8
3
11
16
45
20
34
0...

result:

ok 1060 numbers

Test #3:

score: 0
Accepted
time: 6ms
memory: 40392kb

input:

1
1000 1000 979065
DDUULULUDULLULLDLUULURRLDURLRDLRRUURUUUDLRLUUDUUDUDLLDDDULU

output:

958416

result:

ok 1 number(s): "958416"

Test #4:

score: 0
Accepted
time: 4ms
memory: 40336kb

input:

1
1000 1000 943471
LRLDLURLDLRDRDUULULRDDLLRURDUURLLDDLDLDDLLLUUURLDRUDRLLUUUUUDLUUDLURURRDLRLRRRLULRRULURLRRDLDRLUDRRLDDLUDRRLLUDLLLRDULRRRRLDUUDRDLULUUUUDRRDULUDLLUUDLDURDRRLRRLDRLDDRURURLUULRRLDLLRLRDRRUULDLDLULLDLLRULLRUULURDURRLUUDUULLULDLRUDDLRLRLLUDDDLLLUDRRLDDULRRURRDURDDRDLLULRLULURLRDLLURD...

output:

889224

result:

ok 1 number(s): "889224"

Test #5:

score: 0
Accepted
time: 94ms
memory: 47968kb

input:

1
1000 1000 315808
LLRURURRDDDULLDDUDRDLRLLLDDDLUDRDURLDULRLRULUUDLUULUUDULLLLDDURLDUULUUDLLDLLDRUDUULRLLRLRUURLRLULLDDLLDUDLLRUUDRLDLUULDLLDRRRURDULLDRRRDURURDRLDURURUDLURLDURRLRRUDUDURDRLRRRDLRRURLURUDRRLDLRULLDLUURDURLURLLRDLRDRUURURDRUDUUUDLRRLUDLUUDUDDRRDUULUUDDRLLULDUUDRURRDRLULRLULDURLURUDLLD...

output:

426

result:

ok 1 number(s): "426"

Test #6:

score: 0
Accepted
time: 12ms
memory: 38412kb

input:

1
1000 1000 986018
LLULDRRRDDURRUDRUURRRDDLUUDUULRULRDULLD

output:

972180

result:

ok 1 number(s): "972180"

Test #7:

score: 0
Accepted
time: 9ms
memory: 38624kb

input:

1
1000 1000 945431
DDRRURUUDLDULLDLDDLRULDLLDDRRLUDRLUURRLDRDLURUURRRRLRURLURULLLDRDDDRRRLDLDRLRDDUURRURDDDLRUURLUURLRDUDDDLLDUURLDLUDLLRRDUUDRLUULLUULDLURRUDLUURLRLRURDUDRRRDRLRUDLLLLURLULRLRLRRDDUDLRLDUUUULUDLLURRLURRDLRURRRULDDLLLRLRDLUDLLDDRULDUULRDDUUDDUDLURDULLDUDDLULRULDRLDDULDULLUDLULUDRURRR...

output:

893000

result:

ok 1 number(s): "893000"

Test #8:

score: 0
Accepted
time: 96ms
memory: 47896kb

input:

1
1000 1000 460035
RDDUURDULDDLDDLDDLDRRULLRLUURLURRRDRUDDDRDLDLDULUDLRLLRRLRRURRRDLRLUDRDURULDRRDDDDDDLRLDULUULDUDRLLUUUURUUDRURLRRULDRDRUUUUULULRURDDRLRULLLRDRRULUDDUDDLLLRDRUULUUDDRLURDLDURRDLRRLDRRUDLUULRDLURULLDLRLLDDURDUDLDULDLLRULRDLRLUULLUDRUDDDLRRDULULLRUURLUURRLLLLRLDRURLLRLDRRDDDRLUUUUDUL...

output:

417

result:

ok 1 number(s): "417"

Test #9:

score: 0
Accepted
time: 11ms
memory: 40492kb

input:

1
1000 1000 992010
LLLLLDLDRRLUDRR

output:

1999

result:

ok 1 number(s): "1999"

Test #10:

score: 0
Accepted
time: 4ms
memory: 38648kb

input:

1
1000 1000 919600
LLDLRUDRLURRUDRDRRDLRUDLRRRUUULDLDURDDDRUURRRLLURULDRLRLULLULDRULULRLRRRURLDDDRUUULUDLLLLRRLLRDDRDULUDLRLRLDRLUDUDURRULUULLDULUULDLLDRDULUDLDULDDUULDDRRURDRDULRRLDRRDUURURRLUUUDRRLDRRDDLULRDDLDLLRLRLLLRULUUUURRRLDLRUDRRLRURDRLDULLLUDRULLDLDRRUUDLRRLLRLDDLUDLRLRRURUUDUULUDURDURRLUU...

output:

944

result:

ok 1 number(s): "944"

Test #11:

score: 0
Accepted
time: 90ms
memory: 47872kb

input:

1
1000 1000 804351
DLRLDLLLLUDRDURRLDDRRLRUULURURDDDRDLRUDDULRRLLULURDRUUDRURRLURRRDRURRDRLULRDLRRDRRDDUDLUDLDULRUURRLRUUDRLDDRDDUUDULUULUUUDLRURULLRDUUDDDRRLDRUDDUUDRURLRDRUDLRLDDRRLLRLRDUDDULLULRLLDDUDDDUULDULLRRULULDUUULUDRRDRLUDLRRDDUDLRRDDLDLDRUULRRRRRLRLULLRDDRDDDULDRRURUDDLURLRLURLRDRULUDULUU...

output:

640000

result:

ok 1 number(s): "640000"