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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#407247 | #5414. Stop, Yesterday Please No More | xiaole | WA | 1ms | 5828kb | C++23 | 2.4kb | 2024-05-08 12:40:34 | 2024-05-08 12:40:36 |
Judging History
answer
#include<bits/stdc++.h>
#define ios ios::sync_with_stdio(0),cin.tie(0),cout.tie(0)
using namespace std;using ll = long long;using PLL = pair<ll,ll>;
const ll MAX = 1e18;const ll MIN = -1e18;const ll INF=0x3f3f3f3f;
const ll Q = 2e5+9;const ll MOD = 1e9 + 7;
ll d[1005][1005];
bool vis[1005][1005];
void add(ll lx,ll ly,ll rx,ll ry){
d[lx][ly]++;
d[lx][ry+1]--;
d[rx+1][ly]--;
d[rx+1][ry+1]++;
}
void solve(){
ll n,m,k;cin>>n>>m>>k;
for (ll i = 0; i <= n; i++)
for (ll j = 0; j <= m; j++)
d[i][j]=0,vis[i][j]=false;
string s;cin>>s;
if(k==0){
cout<<n*m<<"\n";
return;
}
ll lx=1,ly=1;
ll rx=n,ry=m;
ll U,L,R,D;
U=L=1;
R=m;
D=n;
for (ll i = 0; i < s.size(); i++)
{
if(s[i]=='U'){lx--;rx--;if(lx<1) lx=1;}
if(s[i]=='D'){lx++;rx++;if(rx>n) rx=n;}
if(s[i]=='L'){ly--;ry--;if(ly<1) ly=1;}
if(s[i]=='R'){ly++;ry++;if(ry>m) ry=m;}
L=max(L,rx);
R=min(R,ry);
U=max(U,lx);
D=min(D,ly);
}
if(L>R||U>D)
{
if(k)cout<<0<<endl;
else cout<<m*n<<endl;
return;
}
ll dele=(rx-lx+1)*(ry-ly+1)-k;
if(dele<=0) {
cout<<0<<"\n";
return;
}
reverse(s.begin(),s.end());
add(lx,ly,rx,ry);vis[lx][ly]=true;
for (ll i = 0; i < s.size(); i++)
{
if(s[i]=='U'){
lx++,rx++;
if(vis[lx][ly]==false){
add(lx,ly,rx,ry);
}vis[lx][ly]=true;
}
if(s[i]=='D'){
lx--,rx--;
if(vis[lx][ly]==false){
add(lx,ly,rx,ry);
}vis[lx][ly]=true;
}
if(s[i]=='L'){
ly++,ry++;
if(vis[lx][ly]==false){
add(lx,ly,rx,ry);
}vis[lx][ly]=true;
}
if(s[i]=='R'){
ly--,ry--;
if(vis[lx][ly]==false){
add(lx,ly,rx,ry);
}vis[lx][ly]=true;
}
}
for (ll i = 1; i <= n; i++)
{
for (ll j = 1; j <= m; j++)
{
d[i][j]+=d[i-1][j]+d[i][j-1]-d[i-1][j-1];
}
}
ll ans=0;
for (ll i = 1; i <= n; i++)
{
for (ll j = 1; j <= m; j++)
{
if(d[i][j]==dele) ans++;
}
}
cout<<ans<<"\n";
}
int main(){
ios;ll _=1;cin>>_;
while (_--)solve();
return 0;
}
Details
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Test #1:
score: 0
Wrong Answer
time: 1ms
memory: 5828kb
input:
3 4 5 3 ULDDRR 4 5 0 UUUUUUU 4 5 10 UUUUUUU
output:
0 20 0
result:
wrong answer 1st numbers differ - expected: '2', found: '0'