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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 |
---|---|---|---|---|---|---|---|---|---|
#608947 | #833. Cells Blocking | kgqy | AC ✓ | 351ms | 221408kb | C++14 | 2.5kb | 2024-10-04 09:34:41 | 2024-10-04 09:34:43 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
#define int long long
inline int read(){
int w=0;char ch=getchar();
while(!isdigit(ch)) ch=getchar();
while(isdigit(ch)) w=w*10+ch-'0',ch=getchar();
return w;
}
inline int gc(){
char ch=getchar();
while(ch!='*'&&ch!='.') ch=getchar();
return ch=='*';
}
int n,m;
int blk[3005][3005],wtn;
int tob[3005][3005],toe[3005][3005];
pair<int,int> l1[6005],l2[6005];
int gre[3005][3005];
int blu[3005][3005],sblu=1;
main(){
// freopen("in.in","r",stdin);
// freopen("out1.out","w",stdout);
n=read(),m=read();
for(int i=1;i<=n;i++) for(int j=1;j<=m;j++) blk[i][j]=gc(),wtn+=(blk[i][j]^1);
tob[1][1]=blk[1][1]^1;
for(int k=3;k<=n+m;k++){
for(int i=1,j=k-1;j;i++,j--){
if(i>n||j>m) continue;
if(blk[i][j]) continue;
tob[i][j]=tob[i-1][j]|tob[i][j-1];
}
}
if(!tob[n][m]) return printf("%lld\n",max(0ll,wtn*(wtn-1)/2)),0;
toe[n][m]=1;
for(int k=n+m-1;k>=2;k--){
for(int i=1,j=k-1;j;i++,j--){
if(i>n||j>m) continue;
if(blk[i][j]) continue;
toe[i][j]=toe[i+1][j]|toe[i][j+1];
}
}
// for(int i=1;i<=n;i++,puts("")) for(int j=1;j<=m;j++) putchar(toe[i][j]+'0');
l1[1]={1,1};
for(int i=2;i<n+m;i++){
int lsx=l1[i-1].first,lsy=l1[i-1].second;
if(toe[lsx+1][lsy]) lsx++;
else lsy++;
l1[i]={lsx,lsy};
// printf("%d %d\n",lsx,lsy);
}
l2[1]={1,1};
blu[1][1]=1;
for(int i=2;i<n+m;i++){
int lsx=l2[i-1].first,lsy=l2[i-1].second;
if(toe[lsx][lsy+1]) lsy++;
else lsx++;
l2[i]={lsx,lsy};
if(l1[i]==l2[i]) blu[lsx][lsy]=1,sblu++;//,printf("blu %d %d\n",lsx,lsy);
}
// for(int i=1;i<n+m;i++) printf("%d %d %d %d %d\n",i,l1[i].first,l1[i].second,l2[i].first,l2[i].second);
int ans=sblu*(wtn-sblu)+sblu*(sblu-1)/2;
// printf("%d\n",ans);
for(int i=1;i<n+m;i++){
int nx=l1[i].first,ny=l1[i].second;
if(blu[nx][ny]) continue;
// printf("%d %d %d\n",i,nx,ny);
nx--,ny++;
while(!tob[nx][ny]||!toe[nx][ny]) nx--,ny++;
// printf("%d %d %d\n",i,nx,ny);
if(l2[i].first==nx&&l2[i].second==ny&&!blu[nx][ny]) ans++;//,printf("%d %d\n",nx,ny);
int tx=nx,ty=ny;
for(int j=i-1;j;j--){
if(tob[tx][ty-1]) ty--;
else tx--;
if(l2[j].first==tx&&l2[j].second==ty&&!blu[tx][ty]) ans++;//,printf("%d %d\n",tx,ty);
}
tx=nx,ty=ny;
for(int j=i+1;j<n+m;j++){
if(toe[tx+1][ty]) tx++;
else ty++;
// printf("JG %d %d\n",tx,ty);
if(l2[j].first==tx&&l2[j].second==ty&&!blu[tx][ty]) ans++;//,printf("%d %d\n",tx,ty);
}
}
printf("%lld\n",ans);
}
/*
5 5
.....
.*.*.
.....
.*...
..*..
*/
詳細信息
Test #1:
score: 100
Accepted
time: 2ms
memory: 9880kb
input:
3 3 ... ... ...
output:
17
result:
ok 1 number(s): "17"
Test #2:
score: 0
Accepted
time: 0ms
memory: 9892kb
input:
3 3 .** .*. ...
output:
15
result:
ok 1 number(s): "15"
Test #3:
score: 0
Accepted
time: 1ms
memory: 7920kb
input:
3 4 **** .... ****
output:
6
result:
ok 1 number(s): "6"
Test #4:
score: 0
Accepted
time: 1ms
memory: 7984kb
input:
5 5 *.... .*.*. ***** *.*** ..*..
output:
66
result:
ok 1 number(s): "66"
Test #5:
score: 0
Accepted
time: 1ms
memory: 7860kb
input:
10 10 ...***.*.. **...*.*** ...***.*.. .**...*.*. .*****..*. ..*.****.* .**...**** ..*..*.*.* *.*.**.... ....**...*
output:
1378
result:
ok 1 number(s): "1378"
Test #6:
score: 0
Accepted
time: 301ms
memory: 217588kb
input:
3000 3000 .....................................................................................................................................................................................................................................................................................................
output:
17999999
result:
ok 1 number(s): "17999999"
Test #7:
score: 0
Accepted
time: 311ms
memory: 217532kb
input:
3000 3000 ...................................................................................................................*......................................................................................................................................................................*..........
output:
17981671
result:
ok 1 number(s): "17981671"
Test #8:
score: 0
Accepted
time: 311ms
memory: 217480kb
input:
3000 3000 .....................................................................................................................................................................................................................................................................................................
output:
17963615
result:
ok 1 number(s): "17963615"
Test #9:
score: 0
Accepted
time: 327ms
memory: 217712kb
input:
3000 3000 .........................................................................................................*...........................................................................................................................................................................................
output:
17945165
result:
ok 1 number(s): "17945165"
Test #10:
score: 0
Accepted
time: 323ms
memory: 217528kb
input:
3000 3000 ......................................................................................................................................*........................................................................................................................................*.....................
output:
17928211
result:
ok 1 number(s): "17928211"
Test #11:
score: 0
Accepted
time: 324ms
memory: 217532kb
input:
3000 3000 ...........................................*.........................................................................................................................................................................................................................................................
output:
17911522
result:
ok 1 number(s): "17911522"
Test #12:
score: 0
Accepted
time: 320ms
memory: 217520kb
input:
3000 3000 ..............................*................................................................................................................*.....................................................................................................................................................
output:
17892283
result:
ok 1 number(s): "17892283"
Test #13:
score: 0
Accepted
time: 317ms
memory: 217724kb
input:
3000 3000 ................................................................*....*................................................................................................................................................................................*..............................................
output:
17873837
result:
ok 1 number(s): "17873837"
Test #14:
score: 0
Accepted
time: 265ms
memory: 217584kb
input:
3000 3000 ............................................................................................*.............................................................................*.....................................................................................................*....................
output:
17856701
result:
ok 1 number(s): "17856701"
Test #15:
score: 0
Accepted
time: 332ms
memory: 217588kb
input:
3000 3000 ......................................*..........................................................................................................................................................*...................................................................................................
output:
17837857
result:
ok 1 number(s): "17837857"
Test #16:
score: 0
Accepted
time: 295ms
memory: 217508kb
input:
3000 3000 .................................................................................................................................................................................................................................*...................................................................
output:
17819731
result:
ok 1 number(s): "17819731"
Test #17:
score: 0
Accepted
time: 322ms
memory: 217596kb
input:
3000 3000 ......**.....*.......*.*..........*..*...............**.............*.......*......*........*...*.....*.*.................*......*....*.........*....................*.................*.......................*.......*..*.*.......*.......................*..........*..*......................*...
output:
16202000
result:
ok 1 number(s): "16202000"
Test #18:
score: 0
Accepted
time: 298ms
memory: 217724kb
input:
3000 3000 ..................*....*....*...*.*.............*.............*....*.*..*...*...*...*....*.................*...*.*.***...*....*......*.......**...*.......*.*...**...*...*...**.........*..........*.....*.*....*..*.......*.........*..*.....*...............**.......*.....*.*..*.*.*........*.....
output:
21600132
result:
ok 1 number(s): "21600132"
Test #19:
score: 0
Accepted
time: 98ms
memory: 145268kb
input:
3000 3000 ..*.**...*...............*........*.*..*.*.....*........*.*..........***..*..*..*..*.*....*...*.*.....***.*...*........*..*.****..*.*....**.......*......*....*..*......*......*..*..*.*..*....*..**.*.......**.*...*....**.....**..*......*...*....*..*.**.*..***...*.....*....***.*........*.......
output:
19862779430431
result:
ok 1 number(s): "19862779430431"
Test #20:
score: 0
Accepted
time: 99ms
memory: 145212kb
input:
3000 3000 .**.**..***....*.*....*..*...*.**.**.**.......*...*........*.**.*...*...**..*...*.*.**.*.*.*.*..*...*.....*.*.**.*.*....*.**.....*..**.**.*....**.**.**..*..**...*...***.**.*.*......**.**.*...****.....***.*..*.**.*......*..**.**.**.....**...*.*..***.******...**....****..***..**.*........*.....
output:
14601805246666
result:
ok 1 number(s): "14601805246666"
Test #21:
score: 0
Accepted
time: 1ms
memory: 7916kb
input:
1 1 *
output:
0
result:
ok 1 number(s): "0"
Test #22:
score: 0
Accepted
time: 0ms
memory: 9964kb
input:
1 1 .
output:
0
result:
ok 1 number(s): "0"
Test #23:
score: 0
Accepted
time: 2ms
memory: 9952kb
input:
2 2 .. ..
output:
6
result:
ok 1 number(s): "6"
Test #24:
score: 0
Accepted
time: 107ms
memory: 146472kb
input:
3000 3000 .***..**..*.*.*..*...**.*.**...***.....*..***.***.***.*..***.*......*.**.***.***.*...**.*.*..***.*..*.**..***.....*.*...***.*.***.*...*.*.....***.*..**...*.*..*.******.*.*...**.*..**.**.**.*.**..***.**.***..*......**.***.**.*....*..*.....*...*..*.*..*..*.*...**.**...*..**..***.**..*....*.....
output:
10151159625145
result:
ok 1 number(s): "10151159625145"
Test #25:
score: 0
Accepted
time: 43ms
memory: 105152kb
input:
3000 3000 *******************************************************************************************************************************************************************************************************************************************************.******************************************...
output:
39716328
result:
ok 1 number(s): "39716328"
Test #26:
score: 0
Accepted
time: 337ms
memory: 217596kb
input:
3000 3000 ..*..................................................................................................................................................................................................................................................................................................
output:
35988321
result:
ok 1 number(s): "35988321"
Test #27:
score: 0
Accepted
time: 344ms
memory: 217580kb
input:
3000 3000 .....................................................................................................................................................................................................................................................................................................
output:
35981866
result:
ok 1 number(s): "35981866"
Test #28:
score: 0
Accepted
time: 315ms
memory: 217580kb
input:
3000 3000 ...**................................................................................................................................................................................................................................................................................................
output:
17988153
result:
ok 1 number(s): "17988153"
Test #29:
score: 0
Accepted
time: 302ms
memory: 217736kb
input:
3000 3000 ...*.*...............................................................................................................................................................................................................................................................................................
output:
35969654
result:
ok 1 number(s): "35969654"
Test #30:
score: 0
Accepted
time: 336ms
memory: 217604kb
input:
3000 3000 ..*..................................................................................................................................................................................................................................................................................................
output:
17982216
result:
ok 1 number(s): "17982216"
Test #31:
score: 0
Accepted
time: 328ms
memory: 217592kb
input:
3000 3000 ....**.*.............................................................................................................................................................................................................................................................................................
output:
71916090
result:
ok 1 number(s): "71916090"
Test #32:
score: 0
Accepted
time: 299ms
memory: 217736kb
input:
3000 3000 ....****.............................................................................................................................................................................................................................................................................................
output:
71903186
result:
ok 1 number(s): "71903186"
Test #33:
score: 0
Accepted
time: 329ms
memory: 217584kb
input:
3000 3000 .........*...........................................................................................................................................................................................................................................................................................
output:
17973051
result:
ok 1 number(s): "17973051"
Test #34:
score: 0
Accepted
time: 305ms
memory: 217588kb
input:
3000 3000 .*.......*.............................................................................................................*................................................................................*............................................................................................
output:
35630636
result:
ok 1 number(s): "35630636"
Test #35:
score: 0
Accepted
time: 312ms
memory: 217668kb
input:
3000 3000 .**...........................*..........................................................................................................................................*...........................................................................................................................
output:
44529907
result:
ok 1 number(s): "44529907"
Test #36:
score: 0
Accepted
time: 304ms
memory: 217592kb
input:
3000 3000 ....*................................................................................................................................................................................................................................................................................................
output:
53426863
result:
ok 1 number(s): "53426863"
Test #37:
score: 0
Accepted
time: 325ms
memory: 217524kb
input:
3000 3000 ..*.*........................................................................*............................*...............*.............................................................................................................................................*........*...................
output:
53419301
result:
ok 1 number(s): "53419301"
Test #38:
score: 0
Accepted
time: 277ms
memory: 219524kb
input:
3000 3000 ......*.........*...................................................................................*.....................................................................................................................*................................................*.........................
output:
26705269
result:
ok 1 number(s): "26705269"
Test #39:
score: 0
Accepted
time: 323ms
memory: 217596kb
input:
3000 3000 ....*.**....*................*............................*..........*...............................................................................................................................................................................................................................
output:
17799069
result:
ok 1 number(s): "17799069"
Test #40:
score: 0
Accepted
time: 302ms
memory: 221408kb
input:
3000 3000 ...***.......................................*...........*.....................*........*...........................................................................................................................................................*................................................
output:
53393629
result:
ok 1 number(s): "53393629"
Test #41:
score: 0
Accepted
time: 311ms
memory: 217660kb
input:
3000 3000 .....................................................................................................................................................................................................................................................................................................
output:
98852811
result:
ok 1 number(s): "98852811"
Test #42:
score: 0
Accepted
time: 10ms
memory: 9916kb
input:
1 3000 ........................................................................................................................................................................................................................................................................................................
output:
4498500
result:
ok 1 number(s): "4498500"
Test #43:
score: 0
Accepted
time: 351ms
memory: 217532kb
input:
3000 3000 .*.....*...........................................................................................................*...................................*........................................................................................*............*.......................................
output:
88979547
result:
ok 1 number(s): "88979547"
Test #44:
score: 0
Accepted
time: 291ms
memory: 217592kb
input:
3000 3000 .....................................................................................................................................................................................................................................................................................................
output:
35964327
result:
ok 1 number(s): "35964327"