QOJ.ac
QOJ
ID | 题目 | 提交者 | 结果 | 用时 | 内存 | 语言 | 文件大小 | 提交时间 | 测评时间 |
---|---|---|---|---|---|---|---|---|---|
#671767 | #5414. Stop, Yesterday Please No More | Yurily# | AC ✓ | 17ms | 19620kb | C++20 | 3.2kb | 2024-10-24 14:22:27 | 2024-10-24 14:22:28 |
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(size - 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;
}
详细
Test #1:
score: 100
Accepted
time: 4ms
memory: 19484kb
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: 0
Accepted
time: 6ms
memory: 19620kb
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...
result:
ok 1060 numbers
Test #3:
score: 0
Accepted
time: 9ms
memory: 19548kb
input:
1 1000 1000 979065 DDUULULUDULLULLDLUULURRLDURLRDLRRUURUUUDLRLUUDUUDUDLLDDDULU
output:
958416
result:
ok 1 number(s): "958416"
Test #4:
score: 0
Accepted
time: 4ms
memory: 19420kb
input:
1 1000 1000 943471 LRLDLURLDLRDRDUULULRDDLLRURDUURLLDDLDLDDLLLUUURLDRUDRLLUUUUUDLUUDLURURRDLRLRRRLULRRULURLRRDLDRLUDRRLDDLUDRRLLUDLLLRDULRRRRLDUUDRDLULUUUUDRRDULUDLLUUDLDURDRRLRRLDRLDDRURURLUULRRLDLLRLRDRRUULDLDLULLDLLRULLRUULURDURRLUUDUULLULDLRUDDLRLRLLUDDDLLLUDRRLDDULRRURRDURDDRDLLULRLULURLRDLLURD...
output:
889224
result:
ok 1 number(s): "889224"
Test #5:
score: 0
Accepted
time: 12ms
memory: 19468kb
input:
1 1000 1000 315808 LLRURURRDDDULLDDUDRDLRLLLDDDLUDRDURLDULRLRULUUDLUULUUDULLLLDDURLDUULUUDLLDLLDRUDUULRLLRLRUURLRLULLDDLLDUDLLRUUDRLDLUULDLLDRRRURDULLDRRRDURURDRLDURURUDLURLDURRLRRUDUDURDRLRRRDLRRURLURUDRRLDLRULLDLUURDURLURLLRDLRDRUURURDRUDUUUDLRRLUDLUUDUDDRRDUULUUDDRLLULDUUDRURRDRLULRLULDURLURUDLLD...
output:
426
result:
ok 1 number(s): "426"
Test #6:
score: 0
Accepted
time: 8ms
memory: 19536kb
input:
1 1000 1000 986018 LLULDRRRDDURRUDRUURRRDDLUUDUULRULRDULLD
output:
972180
result:
ok 1 number(s): "972180"
Test #7:
score: 0
Accepted
time: 6ms
memory: 19460kb
input:
1 1000 1000 945431 DDRRURUUDLDULLDLDDLRULDLLDDRRLUDRLUURRLDRDLURUURRRRLRURLURULLLDRDDDRRRLDLDRLRDDUURRURDDDLRUURLUURLRDUDDDLLDUURLDLUDLLRRDUUDRLUULLUULDLURRUDLUURLRLRURDUDRRRDRLRUDLLLLURLULRLRLRRDDUDLRLDUUUULUDLLURRLURRDLRURRRULDDLLLRLRDLUDLLDDRULDUULRDDUUDDUDLURDULLDUDDLULRULDRLDDULDULLUDLULUDRURRR...
output:
893000
result:
ok 1 number(s): "893000"
Test #8:
score: 0
Accepted
time: 16ms
memory: 19616kb
input:
1 1000 1000 460035 RDDUURDULDDLDDLDDLDRRULLRLUURLURRRDRUDDDRDLDLDULUDLRLLRRLRRURRRDLRLUDRDURULDRRDDDDDDLRLDULUULDUDRLLUUUURUUDRURLRRULDRDRUUUUULULRURDDRLRULLLRDRRULUDDUDDLLLRDRUULUUDDRLURDLDURRDLRRLDRRUDLUULRDLURULLDLRLLDDURDUDLDULDLLRULRDLRLUULLUDRUDDDLRRDULULLRUURLUURRLLLLRLDRURLLRLDRRDDDRLUUUUDUL...
output:
417
result:
ok 1 number(s): "417"
Test #9:
score: 0
Accepted
time: 8ms
memory: 19540kb
input:
1 1000 1000 992010 LLLLLDLDRRLUDRR
output:
1999
result:
ok 1 number(s): "1999"
Test #10:
score: 0
Accepted
time: 4ms
memory: 19532kb
input:
1 1000 1000 919600 LLDLRUDRLURRUDRDRRDLRUDLRRRUUULDLDURDDDRUURRRLLURULDRLRLULLULDRULULRLRRRURLDDDRUUULUDLLLLRRLLRDDRDULUDLRLRLDRLUDUDURRULUULLDULUULDLLDRDULUDLDULDDUULDDRRURDRDULRRLDRRDUURURRLUUUDRRLDRRDDLULRDDLDLLRLRLLLRULUUUURRRLDLRUDRRLRURDRLDULLLUDRULLDLDRRUUDLRRLLRLDDLUDLRLRRURUUDUULUDURDURRLUU...
output:
944
result:
ok 1 number(s): "944"
Test #11:
score: 0
Accepted
time: 17ms
memory: 19588kb
input:
1 1000 1000 804351 DLRLDLLLLUDRDURRLDDRRLRUULURURDDDRDLRUDDULRRLLULURDRUUDRURRLURRRDRURRDRLULRDLRRDRRDDUDLUDLDULRUURRLRUUDRLDDRDDUUDULUULUUUDLRURULLRDUUDDDRRLDRUDDUUDRURLRDRUDLRLDDRRLLRLRDUDDULLULRLLDDUDDDUULDULLRRULULDUUULUDRRDRLUDLRRDDUDLRRDDLDLDRUULRRRRRLRLULLRDDRDDDULDRRURUDDLURLRLURLRDRULUDULUU...
output:
640000
result:
ok 1 number(s): "640000"