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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#397306 | #1286. Ternary String Counting | maoyiting | WA | 2ms | 9192kb | C++14 | 1.2kb | 2024-04-23 21:50:41 | 2024-04-23 21:50:41 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
const int N=5e3+5,mod=1e9+7;
int t,n,m,Lj[N],Rj[N],Lk[N],Rk[N],sx[N],sy[N],f[N][N],ans;
deque<int>q[N];
void upd(int x,int y,int v){
q[y].push_back(x);
(sx[x]+=v)%=mod,(sy[y]+=v)%=mod,(f[x][y]+=v)%=mod;
}
void del(int x,int y){
(sx[x]-=f[x][y])%=mod,(sy[y]-=f[x][y])%=mod,f[x][y]=0;
}
signed main(){
scanf("%d",&t);
while(t--){
scanf("%d%d",&n,&m),ans=0;
for(int i=0;i<=n;i++)
sx[i]=sy[i]=Lj[i]=Lk[i]=0,Rj[i]=Rk[i]=i-1,
fill(f[i],f[i]+1+n,0),q[i].clear();
for(int i=1,l,r,x;i<=m;i++){
scanf("%d%d%d",&l,&r,&x);
if(x==1) Rj[r]=min(Rj[r],l-1);
if(x==2) Lj[r]=max(Lj[r],l),Rk[r]=min(Rk[r],l-1);
if(x==3) Lk[r]=max(Lk[r],l);
}
upd(0,0,3);
for(int i=1;i<n;i++){
for(int j=0;j<i;j++) upd(i,j,(sx[j]+sy[j])%mod);
for(int k=0;k<i;k++){
int lj=Lj[i+1],rj=Rj[i+1];
if(!(Lk[i+1]<=k&&k<=Rk[i+1])) lj=n;
while(q[k].size()&&q[k].front()<lj)
del(q[k].front(),k),q[k].pop_front();
while(q[k].size()&&q[k].back()>rj)
del(q[k].back(),k),q[k].pop_back();
}
}
for(int i=0;i<n;i++)
for(int j=0;j<n;j++) (ans+=f[i][j])%=mod;
printf("%d\n",ans);
}
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 2ms
memory: 7224kb
input:
4 1 0 2 0 3 0 5 2 1 3 3 4 5 1
output:
3 9 27 18
result:
ok 4 tokens
Test #2:
score: -100
Wrong Answer
time: 0ms
memory: 9192kb
input:
741 5 3 1 5 3 3 4 2 1 4 3 4 3 2 4 2 1 4 1 2 3 3 10 3 9 10 2 3 6 3 1 9 1 3 4 2 3 2 1 3 2 2 3 3 1 3 3 10 4 6 6 1 9 10 2 4 8 3 4 10 3 6 3 1 4 3 2 4 2 2 2 2 4 3 1 4 1 1 1 2 2 3 1 5 3 4 5 2 4 5 1 1 4 3 9 3 2 3 2 1 9 2 2 4 2 4 3 1 3 3 2 3 2 1 2 3 8 4 5 8 1 4 8 1 3 5 3 1 3 3 9 3 4 5 1 1 5 3 3 8 2 8 3 5 7 2...
output:
90 0 0 0 24300 0 3 0 768 0 0 972 2916 0 6480 864 0 0 0 0 0 0 0 0 6 0 0 0 0 0 96 0 6 0 0 0 4374 0 0 0 108 0 0 0 2916 0 0 0 0 0 0 0 0 0 0 324 8748 0 0 0 0 0 0 4320 0 0 0 18 0 0 0 0 0 0 0 0 0 0 0 1992 0 0 450 0 162 1656 0 0 3 0 0 54 0 18 0 0 0 0 744 0 1620 324 0 0 36 36 0 0 60 6 54 0 0 0 0 0 0 0 0 243 ...
result:
wrong answer 7th words differ - expected: '0', found: '3'