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QOJ
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 |
---|---|---|---|---|---|---|---|---|---|
#328094 | #833. Cells Blocking | kkio | AC ✓ | 158ms | 207252kb | C++14 | 3.7kb | 2024-02-15 17:00:26 | 2024-02-15 17:00:27 |
Judging History
answer
#include <bits/stdc++.h>
#define int long long
using namespace std;
const int maxn=3005;
int n,m,fre,sec,val[maxn][maxn],zp[maxn][maxn],rp[maxn][maxn];
char s[maxn][maxn];
bool canv[maxn][maxn],bvis[maxn][maxn];
int v1[maxn][maxn],v2[maxn][maxn];
int tx[maxn<<1],ty[maxn<<1];
signed main()
{
// freopen("data.in","r",stdin);
// freopen("1.out","w",stdout);
scanf("%lld%lld",&n,&m);
for(int i=1;i<=n;i++)
scanf("%s",s[i]+1);
for(int i=1;i<=n;i++)
for(int j=1;j<=m;j++)
if(s[i][j]=='.')fre++;
for(int i=n;i>=1;i--)
for(int j=m;j>=1;j--)
if(s[i][j]=='*')continue;
else
{
if(i==n&&j==m)canv[i][j]=1;
else
{
if(i!=n)canv[i][j]|=canv[i+1][j];
if(j!=m)canv[i][j]|=canv[i][j+1];
}
}
for(int i=1;i<=n;i++)
for(int j=1;j<=m;j++)
if(s[i][j]=='*')continue;
else
{
if(i==1&&j==1)bvis[i][j]=1;
else
{
if(i!=1)bvis[i][j]|=bvis[i-1][j];
if(j!=1)bvis[i][j]|=bvis[i][j-1];
}
}
if(!canv[1][1])
{
cout<<1ll*fre*(fre-1)/2<<'\n';
return 0;
}
long long ans=0;
for(int nowx=1,nowy=1;1;)
{
v1[nowx][nowy]=1;
if(nowx==n&&nowy==m)break;
if(canv[nowx][nowy+1])nowy++;
else nowx++;
// cout<<nowx<<' '<<nowy<<'\n';
}
for(int nowx=1,nowy=1;1;)
{
v2[nowx][nowy]=1;
if(nowx==n&&nowy==m)break;
if(canv[nowx+1][nowy])nowx++;
else nowy++;
}
for(int i=1;i<=n;i++)
for(int j=1;j<=m;j++)
if(v1[i][j]&&v2[i][j])sec++;
ans=1ll*sec*(fre-sec)+1ll*sec*(sec-1)/2;
// cout<<sec<<' '<<ans<<'\n';
for(int i=1;i<=n;i++)
for(int j=1;j<=m;j++)
if(canv[i][j]&&bvis[i][j]&&!v1[i][j])
if(!tx[i+j]||(tx[i+j]>i))tx[i+j]=i,ty[i+j]=j;
// for(int i=1;i<=n+m;i++)
// cout<<tx[i]<<' '<<ty[i]<<'\n';
int sum=0;
for(int i=1;i<=n;i++)
for(int j=1;j<=m;j++)
if(v1[i][j]&&(i!=n||j!=n))
{
//cout<<i<<' '<<j<<'\n';
if(canv[i][j+1])
{
if(v1[i][j+1]&&v2[i][j+1])continue;
if(!tx[i+j+1])sum++;
val[tx[i+j+1]][ty[i+j+1]]++;
zp[tx[i+j+1]][ty[i+j+1]]++;
rp[tx[i+j+1]][ty[i+j+1]]++;
}
else{
if(v1[i+1][j]&&v2[i+1][j])continue;
if(!tx[i+j+1])sum++;
val[tx[i+j+1]][ty[i+j+1]]++;
zp[tx[i+j+1]][ty[i+j+1]]++;
rp[tx[i+j+1]][ty[i+j+1]]++;
}
}
for(int i=1;i<=n;i++)
for(int j=1;j<=m;j++)
if(!canv[i][j])continue;
else
{
if(v2[i][j]&&!v1[i][j])ans+=val[i][j];
if(canv[i][j+1])val[i][j+1]+=val[i][j];
else val[i+1][j]+=val[i][j];
}
for(int i=n;i>=1;i--)
for(int j=m;j>=1;j--)
if(!bvis[i][j])continue;
else
{
if(v2[i][j]&&!v1[i][j])ans+=zp[i][j]-rp[i][j];
if(bvis[i-1][j])zp[i-1][j]+=zp[i][j];
else zp[i][j-1]+=zp[i][j];
}
// for(int i=1;i<=n;i++,cout<<'\n')
// for(int j=1;j<=m;j++)
// cout<<zp[i][j]<<' ';
ans+=1ll*(n+m-1-sec)*sum;
cout<<ans<<'\n';
}
详细
Test #1:
score: 100
Accepted
time: 1ms
memory: 3664kb
input:
3 3 ... ... ...
output:
17
result:
ok 1 number(s): "17"
Test #2:
score: 0
Accepted
time: 0ms
memory: 3828kb
input:
3 3 .** .*. ...
output:
15
result:
ok 1 number(s): "15"
Test #3:
score: 0
Accepted
time: 0ms
memory: 3844kb
input:
3 4 **** .... ****
output:
6
result:
ok 1 number(s): "6"
Test #4:
score: 0
Accepted
time: 0ms
memory: 3860kb
input:
5 5 *.... .*.*. ***** *.*** ..*..
output:
66
result:
ok 1 number(s): "66"
Test #5:
score: 0
Accepted
time: 0ms
memory: 3764kb
input:
10 10 ...***.*.. **...*.*** ...***.*.. .**...*.*. .*****..*. ..*.****.* .**...**** ..*..*.*.* *.*.**.... ....**...*
output:
1378
result:
ok 1 number(s): "1378"
Test #6:
score: 0
Accepted
time: 92ms
memory: 207008kb
input:
3000 3000 .....................................................................................................................................................................................................................................................................................................
output:
17999999
result:
ok 1 number(s): "17999999"
Test #7:
score: 0
Accepted
time: 111ms
memory: 207012kb
input:
3000 3000 ...................................................................................................................*......................................................................................................................................................................*..........
output:
17981671
result:
ok 1 number(s): "17981671"
Test #8:
score: 0
Accepted
time: 132ms
memory: 207080kb
input:
3000 3000 .....................................................................................................................................................................................................................................................................................................
output:
17963615
result:
ok 1 number(s): "17963615"
Test #9:
score: 0
Accepted
time: 95ms
memory: 206812kb
input:
3000 3000 .........................................................................................................*...........................................................................................................................................................................................
output:
17945165
result:
ok 1 number(s): "17945165"
Test #10:
score: 0
Accepted
time: 74ms
memory: 207084kb
input:
3000 3000 ......................................................................................................................................*........................................................................................................................................*.....................
output:
17928211
result:
ok 1 number(s): "17928211"
Test #11:
score: 0
Accepted
time: 104ms
memory: 206696kb
input:
3000 3000 ...........................................*.........................................................................................................................................................................................................................................................
output:
17911522
result:
ok 1 number(s): "17911522"
Test #12:
score: 0
Accepted
time: 118ms
memory: 206964kb
input:
3000 3000 ..............................*................................................................................................................*.....................................................................................................................................................
output:
17892283
result:
ok 1 number(s): "17892283"
Test #13:
score: 0
Accepted
time: 108ms
memory: 206860kb
input:
3000 3000 ................................................................*....*................................................................................................................................................................................*..............................................
output:
17873837
result:
ok 1 number(s): "17873837"
Test #14:
score: 0
Accepted
time: 100ms
memory: 206696kb
input:
3000 3000 ............................................................................................*.............................................................................*.....................................................................................................*....................
output:
17856701
result:
ok 1 number(s): "17856701"
Test #15:
score: 0
Accepted
time: 100ms
memory: 206604kb
input:
3000 3000 ......................................*..........................................................................................................................................................*...................................................................................................
output:
17837857
result:
ok 1 number(s): "17837857"
Test #16:
score: 0
Accepted
time: 114ms
memory: 206652kb
input:
3000 3000 .................................................................................................................................................................................................................................*...................................................................
output:
17819731
result:
ok 1 number(s): "17819731"
Test #17:
score: 0
Accepted
time: 136ms
memory: 200152kb
input:
3000 3000 ......**.....*.......*.*..........*..*...............**.............*.......*......*........*...*.....*.*.................*......*....*.........*....................*.................*.......................*.......*..*.*.......*.......................*..........*..*......................*...
output:
16202000
result:
ok 1 number(s): "16202000"
Test #18:
score: 0
Accepted
time: 158ms
memory: 179980kb
input:
3000 3000 ..................*....*....*...*.*.............*.............*....*.*..*...*...*...*....*.................*...*.*.***...*....*......*.......**...*.......*.*...**...*...*...**.........*..........*.....*.*....*..*.......*.........*..*.....*...............**.......*.....*.*..*.*.*........*.....
output:
21600132
result:
ok 1 number(s): "21600132"
Test #19:
score: 0
Accepted
time: 69ms
memory: 30220kb
input:
3000 3000 ..*.**...*...............*........*.*..*.*.....*........*.*..........***..*..*..*..*.*....*...*.*.....***.*...*........*..*.****..*.*....**.......*......*....*..*......*......*..*..*.*..*....*..**.*.......**.*...*....**.....**..*......*...*....*..*.**.*..***...*.....*....***.*........*.......
output:
19862779430431
result:
ok 1 number(s): "19862779430431"
Test #20:
score: 0
Accepted
time: 96ms
memory: 29992kb
input:
3000 3000 .**.**..***....*.*....*..*...*.**.**.**.......*...*........*.**.*...*...**..*...*.*.**.*.*.*.*..*...*.....*.*.**.*.*....*.**.....*..**.**.*....**.**.**..*..**...*...***.**.*.*......**.**.*...****.....***.*..*.**.*......*..**.**.**.....**...*.*..***.******...**....****..***..**.*........*.....
output:
14601805246666
result:
ok 1 number(s): "14601805246666"
Test #21:
score: 0
Accepted
time: 1ms
memory: 3676kb
input:
1 1 *
output:
0
result:
ok 1 number(s): "0"
Test #22:
score: 0
Accepted
time: 0ms
memory: 3852kb
input:
1 1 .
output:
0
result:
ok 1 number(s): "0"
Test #23:
score: 0
Accepted
time: 0ms
memory: 3892kb
input:
2 2 .. ..
output:
6
result:
ok 1 number(s): "6"
Test #24:
score: 0
Accepted
time: 94ms
memory: 30152kb
input:
3000 3000 .***..**..*.*.*..*...**.*.**...***.....*..***.***.***.*..***.*......*.**.***.***.*...**.*.*..***.*..*.**..***.....*.*...***.*.***.*...*.*.....***.*..**...*.*..*.******.*.*...**.*..**.**.**.*.**..***.**.***..*......**.***.**.*....*..*.....*...*..*.*..*..*.*...**.**...*..**..***.**..*....*.....
output:
10151159625145
result:
ok 1 number(s): "10151159625145"
Test #25:
score: 0
Accepted
time: 28ms
memory: 29788kb
input:
3000 3000 *******************************************************************************************************************************************************************************************************************************************************.******************************************...
output:
39716328
result:
ok 1 number(s): "39716328"
Test #26:
score: 0
Accepted
time: 94ms
memory: 207140kb
input:
3000 3000 ..*..................................................................................................................................................................................................................................................................................................
output:
35988321
result:
ok 1 number(s): "35988321"
Test #27:
score: 0
Accepted
time: 112ms
memory: 207040kb
input:
3000 3000 .....................................................................................................................................................................................................................................................................................................
output:
35981866
result:
ok 1 number(s): "35981866"
Test #28:
score: 0
Accepted
time: 107ms
memory: 207124kb
input:
3000 3000 ...**................................................................................................................................................................................................................................................................................................
output:
17988153
result:
ok 1 number(s): "17988153"
Test #29:
score: 0
Accepted
time: 120ms
memory: 206936kb
input:
3000 3000 ...*.*...............................................................................................................................................................................................................................................................................................
output:
35969654
result:
ok 1 number(s): "35969654"
Test #30:
score: 0
Accepted
time: 96ms
memory: 207132kb
input:
3000 3000 ..*..................................................................................................................................................................................................................................................................................................
output:
17982216
result:
ok 1 number(s): "17982216"
Test #31:
score: 0
Accepted
time: 112ms
memory: 207112kb
input:
3000 3000 ....**.*.............................................................................................................................................................................................................................................................................................
output:
71916090
result:
ok 1 number(s): "71916090"
Test #32:
score: 0
Accepted
time: 106ms
memory: 207044kb
input:
3000 3000 ....****.............................................................................................................................................................................................................................................................................................
output:
71903186
result:
ok 1 number(s): "71903186"
Test #33:
score: 0
Accepted
time: 108ms
memory: 207140kb
input:
3000 3000 .........*...........................................................................................................................................................................................................................................................................................
output:
17973051
result:
ok 1 number(s): "17973051"
Test #34:
score: 0
Accepted
time: 95ms
memory: 206964kb
input:
3000 3000 .*.......*.............................................................................................................*................................................................................*............................................................................................
output:
35630636
result:
ok 1 number(s): "35630636"
Test #35:
score: 0
Accepted
time: 83ms
memory: 206776kb
input:
3000 3000 .**...........................*..........................................................................................................................................*...........................................................................................................................
output:
44529907
result:
ok 1 number(s): "44529907"
Test #36:
score: 0
Accepted
time: 111ms
memory: 206904kb
input:
3000 3000 ....*................................................................................................................................................................................................................................................................................................
output:
53426863
result:
ok 1 number(s): "53426863"
Test #37:
score: 0
Accepted
time: 115ms
memory: 206900kb
input:
3000 3000 ..*.*........................................................................*............................*...............*.............................................................................................................................................*........*...................
output:
53419301
result:
ok 1 number(s): "53419301"
Test #38:
score: 0
Accepted
time: 91ms
memory: 206692kb
input:
3000 3000 ......*.........*...................................................................................*.....................................................................................................................*................................................*.........................
output:
26705269
result:
ok 1 number(s): "26705269"
Test #39:
score: 0
Accepted
time: 114ms
memory: 206676kb
input:
3000 3000 ....*.**....*................*............................*..........*...............................................................................................................................................................................................................................
output:
17799069
result:
ok 1 number(s): "17799069"
Test #40:
score: 0
Accepted
time: 108ms
memory: 206872kb
input:
3000 3000 ...***.......................................*...........*.....................*........*...........................................................................................................................................................*................................................
output:
53393629
result:
ok 1 number(s): "53393629"
Test #41:
score: 0
Accepted
time: 97ms
memory: 207252kb
input:
3000 3000 .....................................................................................................................................................................................................................................................................................................
output:
98852811
result:
ok 1 number(s): "98852811"
Test #42:
score: 0
Accepted
time: 0ms
memory: 3724kb
input:
1 3000 ........................................................................................................................................................................................................................................................................................................
output:
4498500
result:
ok 1 number(s): "4498500"
Test #43:
score: 0
Accepted
time: 92ms
memory: 206936kb
input:
3000 3000 .*.....*...........................................................................................................*...................................*........................................................................................*............*.......................................
output:
88979547
result:
ok 1 number(s): "88979547"
Test #44:
score: 0
Accepted
time: 99ms
memory: 207188kb
input:
3000 3000 .....................................................................................................................................................................................................................................................................................................
output:
35964327
result:
ok 1 number(s): "35964327"