QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#593852 | #6968. 守卫 | _TLEer_ | 100 ✓ | 48ms | 101220kb | C++14 | 616b | 2024-09-27 16:26:57 | 2024-09-27 16:26:58 |
Judging History
answer
#include<bits/stdc++.h>
#define eps 1e-7
using namespace std;
int dp[5010][5010],n,h[5010],ans;
#define seek(p,a,b) ((double)(1)*(h[p]-h[a])/(p-a)>(double)(1)*(h[p]-h[b])/(p-b))
signed main(){
ios::sync_with_stdio(false);
cin.tie();cout.tie();
cin>>n;
for(int i=1;i<=n;i++)cin>>h[i];
for(int i=1;i<=n;i++){
dp[i][i]=1;ans^=1;
int sigm=1,lst=0;
for(int j=i-1;j>=1;j--){
if(!lst)lst=j;
else if(seek(i,lst,j))
sigm+=min(dp[j+1][lst],dp[j+1][lst-1]),lst=j;
dp[j][i]=sigm+min(dp[j][lst],dp[j][lst-1]);
ans^=dp[j][i];
}
}
cout<<ans<<'\n';
return 0;
}
Details
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Pretests
Final Tests
Test #1:
score: 10
Accepted
time: 1ms
memory: 5720kb
input:
20 1000000000 6 333333333 8 200000000 10 142857142 4 111111111 8 632272582 856183512 735834478 604710445 475814705 581607279 875443850 967283125 469235857 680058587
output:
2
result:
ok 1 number(s): "2"
Test #2:
score: 10
Accepted
time: 0ms
memory: 3620kb
input:
19 1000000000 6 333333333 8 200000000 10 142857142 4 111111111 11234478 632272582 856183512 735834478 604710445 475814705 581607279 875443850 967283125 469235857
output:
0
result:
ok 1 number(s): "0"
Test #3:
score: 10
Accepted
time: 0ms
memory: 3704kb
input:
20 1000000000 6 333333333 8 200000000 10 142857142 4 111111111 8 632272582 856183512 735834478 604710445 475814705 581607279 875443850 967283125 469235857 680058587
output:
2
result:
ok 1 number(s): "2"
Test #4:
score: 10
Accepted
time: 0ms
memory: 12424kb
input:
499 1000000000 6 333333333 8 200000000 10 142857142 4 111111111 8 90909090 2 76923076 2 66666666 8 58823529 5 52631578 5 47619047 9 43478260 10 40000000 5 37037037 7 34482758 7 32258064 7 30303030 5 28571428 6 27027027 5 25641025 4 24390243 3 23255813 8 22222222 7 21276595 6 20408163 10 19607843 5 1...
output:
119
result:
ok 1 number(s): "119"
Test #5:
score: 10
Accepted
time: 3ms
memory: 14252kb
input:
500 1000000000 6 333333333 8 200000000 10 142857142 4 111111111 8 90909090 2 76923076 2 66666666 8 58823529 5 52631578 5 47619047 9 43478260 10 40000000 5 37037037 7 34482758 7 32258064 7 30303030 5 28571428 6 27027027 5 25641025 4 24390243 3 23255813 8 22222222 7 21276595 6 20408163 10 19607843 5 1...
output:
17
result:
ok 1 number(s): "17"
Test #6:
score: 10
Accepted
time: 3ms
memory: 14172kb
input:
499 1000000000 6 333333333 8 200000000 10 142857142 4 111111111 8 90909090 2 76923076 2 66666666 8 58823529 5 52631578 5 47619047 9 43478260 10 40000000 5 37037037 7 34482758 7 32258064 7 30303030 5 28571428 6 27027027 5 25641025 4 24390243 3 23255813 8 22222222 7 21276595 6 20408163 10 19607843 5 1...
output:
119
result:
ok 1 number(s): "119"
Test #7:
score: 10
Accepted
time: 0ms
memory: 14060kb
input:
500 1000000000 6 333333333 8 200000000 10 142857142 4 111111111 8 90909090 2 76923076 2 66666666 8 58823529 5 52631578 5 47619047 9 43478260 10 40000000 5 37037037 7 34482758 7 32258064 7 30303030 5 28571428 6 27027027 5 25641025 4 24390243 3 23255813 8 22222222 7 21276595 6 20408163 10 19607843 5 1...
output:
17
result:
ok 1 number(s): "17"
Test #8:
score: 10
Accepted
time: 48ms
memory: 73200kb
input:
4999 1000000000 6 333333333 8 200000000 10 142857142 4 111111111 8 90909090 2 76923076 2 66666666 8 58823529 5 52631578 5 47619047 9 43478260 10 40000000 5 37037037 7 34482758 7 32258064 7 30303030 5 28571428 6 27027027 5 25641025 4 24390243 3 23255813 8 22222222 7 21276595 6 20408163 10 19607843 5 ...
output:
71
result:
ok 1 number(s): "71"
Test #9:
score: 10
Accepted
time: 39ms
memory: 100628kb
input:
5000 1000000000 6 333333333 8 200000000 10 142857142 4 111111111 8 90909090 2 76923076 2 66666666 8 58823529 5 52631578 5 47619047 9 43478260 10 40000000 5 37037037 7 34482758 7 32258064 7 30303030 5 28571428 6 27027027 5 25641025 4 24390243 3 23255813 8 22222222 7 21276595 6 20408163 10 19607843 5 ...
output:
16
result:
ok 1 number(s): "16"
Test #10:
score: 10
Accepted
time: 36ms
memory: 101220kb
input:
4999 1000000000 3 333333333 7 200000000 6 142857142 5 111111111 1 90909090 4 76923076 6 66666666 9 58823529 8 52631578 7 47619047 9 43478260 8 40000000 10 37037037 9 34482758 4 32258064 3 30303030 5 28571428 5 27027027 5 25641025 6 24390243 9 23255813 10 22222222 6 21276595 3 20408163 10 19607843 8 ...
output:
370
result:
ok 1 number(s): "370"
Extra Test:
score: 0
Extra Test Passed