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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#594931 | #5414. Stop, Yesterday Please No More | johntime | TL | 8ms | 34780kb | C++14 | 1.9kb | 2024-09-28 11:19:25 | 2024-09-28 11:19:26 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
constexpr int maxn = 1e4+10;
constexpr int D = 1000;
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=n,l=1,r=m;
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+n);
l=max(l,nowx+1);
r=min(r,nowx+m);
}
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*2+n,vector<int>(D*2+m,0));
vector<vector<int>> vis(D*2+n,vector<int>(D*2+m,0));
add(f,u+D,l+D,d+D,r+D);
vis[u+D][l+D]=1;
for(auto &c:s){
if(c=='U'){
u--,d--;
}
if(c=='D'){
u++,d++;
}
if(c=='L'){
l--,r--;
}
if(c=='R'){
l++,r++;
}
if(!vis[u+D][l+D]){
add(f,u+D,l+D,d+D,r+D);
}
vis[u+D][l+D]=1;
}
for(int i=1;i<D*2+n;i++){
for(int j=1;j<D*2+m;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: 8ms
memory: 34780kb
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
Time Limit Exceeded
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 20 99 18 15 34 240 15 0 0 13 14 18 26 16 1 19 108 8 2 2 3 7 0 30 16 21 0 8 10 9 15 5 320 11 7 3 0 0 12 0 11 0 0 14 0 22 36 51 23 7 6 4 2 48 28 8 63 22 49 13 10 4 108 10 18 44 0 15 9 0 4 30 14 99 105 10 14 17 0 66 10 11 28 52 34 56 33 14 56 90 14 0 121 3 48 30 36 13 0 30 7 8 3 11 16 45 20 34 0...