QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#717673 | #8552. Sticks | EXODUS | AC ✓ | 202ms | 224676kb | C++17 | 1.3kb | 2024-11-06 18:39:10 | 2024-11-06 18:39:17 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
constexpr int N=3e3+7,mod=998244353;
int n;
char s[N][N];
int f[N][N][2],h1[N][N],h2[N][N];
int w1[N][N],w2[N][N];
int main(){
cin>>n;
for(int i=1;i<=n;i++)scanf("%s",s[i]+1);
for(int i=1;i<=n;i++){
h1[i][0]=w1[i][0]=1;
bool flg=true;
for(int j=1;j<=n;j++){
if(s[i][j]=='0')flg=false;
if(s[i][j]!='1')h1[i][j]=h1[i][j-1];
if(s[i][j]!='0'&&flg)h1[i][j]++,w1[i][j]=1;
}
}
for(int i=1;i<=n;i++){
h2[0][i]=w2[0][i]=1;
bool flg=true;
for(int j=1;j<=n;j++){
if(s[j][i]=='0')flg=false;
if(s[j][i]!='1')h2[j][i]=h2[j-1][i];
if(s[j][i]!='0'&&flg)h2[j][i]++,w2[j][i]=1;
}
}
f[n][n][0]=1;
for(int i=n;i>=0;i--)
for(int j=n;j>=0;j--){
int v;
if(f[i][j][0]){
v=f[i][j][0];
if(j)f[i][j-1][1]=(f[i][j-1][1]+(ll)v*h2[i][j])%mod;
if(i)f[i-1][j][0]=(f[i-1][j][0]+(ll)v*h1[i][j])%mod;
if(i&&j)f[i-1][j-1][0]=(f[i-1][j-1][0]+(ll)v*w2[i][j]*(h1[i][j-1]-w1[i][j-1]))%mod;
}
if(f[i][j][1]){
v=f[i][j][1];
if(j)f[i][j-1][1]=(f[i][j-1][1]+(ll)v*h2[i][j])%mod;
if(i&&j)f[i-1][j-1][0]=(f[i-1][j-1][0]+(ll)v*w2[i][j]*(h1[i][j-1]-w1[i][j-1]))%mod;
}
}
printf("%d\n",(f[0][0][0]+f[0][0][1])%mod);
return 0;
}
这程序好像有点Bug,我给组数据试试?
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 2ms
memory: 14196kb
input:
2 ?? ??
output:
14
result:
ok 1 number(s): "14"
Test #2:
score: 0
Accepted
time: 0ms
memory: 14144kb
input:
5 ??1?? ?1??0 ??0?? ???1? ??1??
output:
3144
result:
ok 1 number(s): "3144"
Test #3:
score: 0
Accepted
time: 0ms
memory: 16044kb
input:
10 0000000000 ?????????? ?????????? ?????????? ?????????? ?????????? ?????????? ?????????? ?????????? ??????????
output:
361458985
result:
ok 1 number(s): "361458985"
Test #4:
score: 0
Accepted
time: 108ms
memory: 201960kb
input:
3000 ??????????????????????????????????????????????????????????0?????????????????????0??????????????????????????????????????????????????????????????????????????????????????0???????????????????????????????????????????0???????????????????????????????????????????????????????????????????????????????????...
output:
56427841
result:
ok 1 number(s): "56427841"
Test #5:
score: 0
Accepted
time: 127ms
memory: 224616kb
input:
3000 ????????????????????????????????????????0??????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????...
output:
145247225
result:
ok 1 number(s): "145247225"
Test #6:
score: 0
Accepted
time: 149ms
memory: 224624kb
input:
3000 ???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????...
output:
925248762
result:
ok 1 number(s): "925248762"
Test #7:
score: 0
Accepted
time: 183ms
memory: 224608kb
input:
3000 ???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????...
output:
845505610
result:
ok 1 number(s): "845505610"
Test #8:
score: 0
Accepted
time: 184ms
memory: 224620kb
input:
3000 ???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????...
output:
123028256
result:
ok 1 number(s): "123028256"
Test #9:
score: 0
Accepted
time: 191ms
memory: 224676kb
input:
3000 ???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????1???1??????????????????????????????????????????????????????????????????????1????????????????????????????????????????????????????????????????...
output:
242286033
result:
ok 1 number(s): "242286033"
Test #10:
score: 0
Accepted
time: 183ms
memory: 224616kb
input:
3000 ??????????????????????????1????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????...
output:
448817936
result:
ok 1 number(s): "448817936"
Test #11:
score: 0
Accepted
time: 182ms
memory: 224488kb
input:
3000 ???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????...
output:
621258555
result:
ok 1 number(s): "621258555"
Test #12:
score: 0
Accepted
time: 171ms
memory: 224536kb
input:
3000 ???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????...
output:
552098298
result:
ok 1 number(s): "552098298"
Test #13:
score: 0
Accepted
time: 180ms
memory: 224620kb
input:
3000 ???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????...
output:
190431651
result:
ok 1 number(s): "190431651"
Test #14:
score: 0
Accepted
time: 124ms
memory: 178944kb
input:
3000 ???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????...
output:
0
result:
ok 1 number(s): "0"
Test #15:
score: 0
Accepted
time: 202ms
memory: 224524kb
input:
3000 ???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????...
output:
641634738
result:
ok 1 number(s): "641634738"
Test #16:
score: 0
Accepted
time: 172ms
memory: 213284kb
input:
3000 ???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????...
output:
434138343
result:
ok 1 number(s): "434138343"
Test #17:
score: 0
Accepted
time: 185ms
memory: 224488kb
input:
3000 ???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????...
output:
70334815
result:
ok 1 number(s): "70334815"
Test #18:
score: 0
Accepted
time: 172ms
memory: 224620kb
input:
3000 ???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????...
output:
26692788
result:
ok 1 number(s): "26692788"
Test #19:
score: 0
Accepted
time: 199ms
memory: 224540kb
input:
3000 ???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????...
output:
513359183
result:
ok 1 number(s): "513359183"
Test #20:
score: 0
Accepted
time: 165ms
memory: 224492kb
input:
3000 ???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????...
output:
144382583
result:
ok 1 number(s): "144382583"
Test #21:
score: 0
Accepted
time: 0ms
memory: 14032kb
input:
1 0
output:
1
result:
ok 1 number(s): "1"
Test #22:
score: 0
Accepted
time: 0ms
memory: 14124kb
input:
1 1
output:
1
result:
ok 1 number(s): "1"
Test #23:
score: 0
Accepted
time: 0ms
memory: 14112kb
input:
2 10 01
output:
0
result:
ok 1 number(s): "0"
Test #24:
score: 0
Accepted
time: 133ms
memory: 170456kb
input:
3000 1???11111??1???1?1?1111?1111??11?11?????11?1?1?1?1?1???111???111???11?1???11?11??1?11???1??111???11??1????1??1?111??1111?1??1?1?1?1111?1??11?111?1?1??11???11?1?1111??11???????1????1???1?1??111?11?1??1111?1111?1????11?11?1??1?1???1????11?1111?1?1?1??1111???1?11?111?1????1?1?11?11???1???????111?1...
output:
354584112
result:
ok 1 number(s): "354584112"
Test #25:
score: 0
Accepted
time: 125ms
memory: 168992kb
input:
3000 111?1111??11??1?1??1???1?????111???1?11111??1?111?1??1?1????11?11111??1??1?11??11????1??11??11?1???1111???1?11?111?11?1???1?11?11?111?11??1???????1?1??11?1111??????1?1??1111????111111111???1?111??1???111???1?11??11?1??1?11??1?1?111?????1??11?1????1???11??1?11?11111?1111??1?1?1?1???1?11111?1?111...
output:
46093564
result:
ok 1 number(s): "46093564"
Test #26:
score: 0
Accepted
time: 76ms
memory: 170792kb
input:
3000 1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111...
output:
1
result:
ok 1 number(s): "1"
Test #27:
score: 0
Accepted
time: 72ms
memory: 170764kb
input:
3000 1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111...
output:
1
result:
ok 1 number(s): "1"
Extra Test:
score: 0
Extra Test Passed