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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#594810 | #5414. Stop, Yesterday Please No More | johntime | RE | 1ms | 3812kb | C++14 | 1.7kb | 2024-09-28 10:30:30 | 2024-09-28 10:30:31 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
constexpr int D=100;
void add(vector<vector<int>> &f,int x1,int y1,int x2,int y2){
f[x1][y1]++;
f[x2+1][y1]--;
f[x1][y2+1]--;
f[x2+1][y2+1]++;
}
void work(){
int n,m,k;
cin>>n>>m>>k;
string s;
cin>>s;
int u=1,d=m,l=1,r=n;
int nowx=0,nowy=0;
for(auto &c:s){
if(c=='U'){
nowy++;
}
if(c=='D'){
nowy--;
}
if(c=='L'){
nowx++;
}
if(c=='R'){
nowx--;
}
u=max(u,nowy+1);
d=min(d,nowy+m);
l=max(l,nowx+1);
r=min(r,nowx+n);
}
if(u>d||l>r){
if(k==0){
cout<<n*m<<'\n';
return;
}else{
cout<<"0\n";
return;
}
}
if((d-u+1)*(r-l+1)<k){
cout<<"0\n";
return;
}
int rest = (d-u+1)*(r-l+1)-k;
vector<vector<int>> f(D+n+10,vector<int>(D+m+100,0)),vis(D+n+100,vector<int>(D+m+100,0));
u+=D,d+=D,l+=D,r+=D;
add(f,u,l,d,r);
for(int i=0;i<s.size();i++){
if(s[i]=='U')--u,--d;
if(s[i]=='D')++u,++d;
if(s[i]=='L')--l,--r;
if(s[i]=='R')++l,++r;
if(!vis[u][l])add(f,u,l,d,r);
vis[u][l]=1;
}
for(int i=1+D;i<=n+D;i++){
for(int j=1+D;j<=m+D;j++){
f[i][j]+=f[i-1][j]+f[i][j-1]-f[i-1][j-1];
}
}
int ans=0;
for(int i=1;i<=n;i++){
for(int j=1;j<=m;j++){
if(f[i+D][j+D]==rest)ans++;
}
}
cout<<ans<<'\n';
}
int main(){
int t;
cin>>t;
while(t--){
work();
}
}
Details
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Test #1:
score: 100
Accepted
time: 1ms
memory: 3812kb
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: -100
Runtime Error
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