QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#671770 | #5414. Stop, Yesterday Please No More | hansue# | WA | 3ms | 19536kb | C++20 | 3.2kb | 2024-10-24 14:23:29 | 2024-10-24 14:23:31 |
Judging History
answer
#include<iostream>
#include<cstdio>
#include<cstring>
#include<cmath>
#include<algorithm>
using namespace std;
const int N = 1e3;
const int NM = 1e6;
int n, m, k;
int c2t(char ch){
if(ch == 'U')
return 0;
if(ch == 'D')
return 1;
if(ch == 'L')
return 2;
if(ch == 'R')
return 3;
return -1;
}
int rev(int t){
return t ^ 1;
}
const int dx[4] = {-1, 1, 0, 0};
const int dy[4] = {0, 0, -1, 1};
int s[N * 2 + 3][N * 2 + 3];
int sum(int stx, int sty, int edx, int edy){
return s[edx][edy] - s[stx - 1][edy] - s[edx][sty - 1] + s[stx - 1][sty - 1];
}
void sol(){
scanf("%d%d%d\n", &n, &m, &k);
// printf("%d %d %d\n", n, m, k);
char ch = getchar();
int l = 0, dir;
int delx, dely;
int maxu, maxd, maxl, maxr;
delx = dely = maxu = maxd = maxl = maxr = 0;
int holx, holy;
for(int i = 1; i <= n * 2; i++)
for(int j = 1; j <= m * 2; j++)
s[i][j] = 0;
s[holx = n][holy = m] = 1;
while(c2t(ch) >= 0){
dir = c2t(ch);
// printf("%d", dir);
delx += dx[dir];
dely += dy[dir];
if(delx < 0)
maxu = max(maxu, abs(delx));
else
maxd = max(maxd, abs(delx));
if(dely < 0)
maxl = max(maxl, abs(dely));
else
maxr = max(maxr, abs(dely));
dir = rev(dir);
holx += dx[dir];
holy += dy[dir];
if(1 <= holx && holx <= n * 2 && 1 <= holy && holy <= m * 2)
s[holx][holy] = 1;
ch = getchar();
}
// printf("\n");
int stx = n + maxu, sty = m + maxl;
int edx = n + n - 1 - maxd, edy = m + m - 1 - maxr;
// printf("ud[%2d,%2d] lr[%2d,%2d]\n", maxu, maxd, maxl, maxr);
// printf("st[%2d,%2d] ed[%2d,%2d]\n", stx, sty, edx, edy);
// printf("%3c", ' ');
// for(int i = 1; i <= m * 2; i++)
// printf("%3d", i);
// printf("\n");
// for(int i = 1; i <= n * 2; i++){
// printf("%3d", i);
// for(int j = 1; j <= m * 2; j++)
// printf("%3d", s[i][j]);
// printf("\n");
// }
// printf("\n");
if(maxu + maxd >= n || maxl + maxr >= m){
if(k == 0)
printf("%d\n", n * m);
else
printf("0\n");
return ;
}
for(int i = 1; i <= n * 2; i++)
for(int j = 1; j <= m * 2; j++)
s[i][j] = s[i][j] + s[i - 1][j] + s[i][j - 1] - s[i - 1][j - 1];
// printf("%3c", ' ');
// for(int i = 1; i <= m * 2; i++)
// printf("%3d", i);
// printf("\n");
// for(int i = 1; i <= n * 2; i++){
// printf("%3d", i);
// for(int j = 1; j <= m * 2; j++)
// printf("%3d", s[i][j]);
// printf("\n");
// }
// printf("\n");
int size = (edx - stx + 1) * (edy - sty + 1);
int ans = 0;
for(int p = 0; p <= n - 1; p++)
for(int q = 0; q <= m - 1; q++)
if(sum(stx - p, sty - q, edx - p, edy - q) == k){
// printf("st(%2d,%2d)ed(%2d,%2d)\n", stx - p, sty - q, edx - p, edy - q);
// printf("s[%2d][%2d]=%2d\n", edx - p, edy - q, s[edx - p][edy - q]);
// printf("s[%2d][%2d]=%2d\n", stx - p - 1, edy - q, s[stx - p - 1][edy - q]);
// printf("s[%2d][%2d]=%2d\n", edx - p, sty - q - 1, s[edx - p][sty - q - 1]);
// printf("s[%2d][%2d]=%2d\n", stx - p - 1, sty - q - 1, s[stx - p - 1][sty - q - 1]);
ans++;
}
printf("%d\n", ans);
}
int main(){
memset(s, 0 , sizeof s);
int T;
scanf("%d", &T);
while(T--)
sol();
return 0;
}
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 0ms
memory: 19536kb
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
Wrong Answer
time: 3ms
memory: 19532kb
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 0 0 0 15 0 240 0 0 0 0 0 18 0 0 0 0 0 0 2 2 3 0 0 0 0 0 0 0 0 9 9 0 320 0 0 3 0 0 0 0 0 0 0 0 0 22 0 51 0 10 6 0 0 48 28 8 0 0 0 0 0 0 0 0 0 44 0 0 0 0 4 30 0 0 105 0 0 17 0 66 0 11 28 0 0 0 0 0 0 90 0 0 0 6 48 0 0 0 0 30 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 48 0 0 225 0 0 0 0 11 0 90 0 0 228 0 ...
result:
wrong answer 3rd numbers differ - expected: '20', found: '0'