Submission #1356389
Source Code Expand
#include <iostream> #include <cstring> #include <bitset> #include <cstdio> using namespace std; typedef long long ll; const int maxn = 15; bitset<maxn> pre[maxn],suf[maxn],tmp; int a[maxn]; int sum[maxn]; bool check(int x, int lb, int ub) { for (int i=lb;i<=ub;i++) if (suf[x][i]) return true; return false; } int main() { //freopen("D.in","r",stdin); //freopen("D.out","w",stdout); int n,k; scanf("%d%d",&n,&k); ll sum = 0; for (int i=1;i<=n;i++) scanf("%d",&a[i]), sum += (ll)a[i]; if (sum < k) { printf("%d\n",n); return 0; } pre[0].reset(); pre[0][0] = 1; for (int i=1;i<=n;i++) { tmp.reset(); if (a[i] < maxn) tmp = pre[i-1] << a[i]; pre[i] = pre[i-1] | tmp; } suf[n+1].reset(); suf[n+1][0] = 1; for (int i=n;i>=1;i--) { tmp.reset(); if (a[i] < maxn) tmp = suf[i+1] << a[i]; suf[i] = suf[i+1] | tmp; } int cnt = 0; for (int i=1;i<=n;i++) { int lb = max(k-a[i],1), ub = k-1; bool exist = false; for (int sum1=0;sum1<=ub;sum1++) { if (!pre[i-1][sum1]) continue; int lb2 = max(lb-sum1,1), ub2 = ub-sum1; if (ub2 < lb2) continue; if (check(i+1,lb2,ub2)) { exist = true; break; } } if (exist) cnt++; } printf("%d\n",cnt); return 0; }
Submission Info
Submission Time | |
---|---|
Task | D - No Need |
User | Gabriel |
Language | C++14 (GCC 5.4.1) |
Score | 0 |
Code Size | 1309 Byte |
Status | RE |
Exec Time | 99 ms |
Memory | 256 KB |
Compile Error
./Main.cpp: In function ‘int main()’: ./Main.cpp:25:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&k); ^ ./Main.cpp:27:59: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for (int i=1;i<=n;i++) scanf("%d",&a[i]), sum += (ll)a[i]; ^
Judge Result
Set Name | Sample | Subtask | All | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 0 / 300 | 0 / 300 | ||||||||||||
Status |
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Set Name | Test Cases |
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Sample | 0_000.txt, 0_001.txt, 0_002.txt |
Subtask | 0_000.txt, 0_001.txt, 0_002.txt, 1_003.txt, 1_004.txt, 1_005.txt, 1_006.txt, 1_007.txt, 1_008.txt, 1_009.txt, 1_010.txt, 1_011.txt, 1_012.txt, 1_013.txt, 1_014.txt, 1_015.txt, 1_016.txt, 1_017.txt, 1_018.txt, 1_019.txt, 1_020.txt, 1_021.txt, 1_022.txt, 1_023.txt, 1_024.txt, 1_025.txt |
All | 0_000.txt, 0_001.txt, 0_002.txt, 1_003.txt, 1_004.txt, 1_005.txt, 1_006.txt, 1_007.txt, 1_008.txt, 1_009.txt, 1_010.txt, 1_011.txt, 1_012.txt, 1_013.txt, 1_014.txt, 1_015.txt, 1_016.txt, 1_017.txt, 1_018.txt, 1_019.txt, 1_020.txt, 1_021.txt, 1_022.txt, 1_023.txt, 1_024.txt, 1_025.txt, 2_026.txt, 2_027.txt, 2_028.txt, 2_029.txt, 2_030.txt, 2_031.txt, 2_032.txt, 2_033.txt, 2_034.txt, 2_035.txt, 2_036.txt, 2_037.txt, 2_038.txt, 2_039.txt, 2_040.txt, 2_041.txt, 2_042.txt, 2_043.txt, 2_044.txt, 2_045.txt, 2_046.txt, 2_047.txt, 2_048.txt, 2_049.txt, 2_050.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
0_000.txt | AC | 1 ms | 256 KB |
0_001.txt | AC | 1 ms | 256 KB |
0_002.txt | AC | 1 ms | 256 KB |
1_003.txt | AC | 1 ms | 256 KB |
1_004.txt | AC | 1 ms | 256 KB |
1_005.txt | WA | 1 ms | 256 KB |
1_006.txt | AC | 1 ms | 256 KB |
1_007.txt | WA | 1 ms | 256 KB |
1_008.txt | WA | 1 ms | 256 KB |
1_009.txt | AC | 1 ms | 256 KB |
1_010.txt | WA | 1 ms | 256 KB |
1_011.txt | AC | 1 ms | 256 KB |
1_012.txt | WA | 1 ms | 256 KB |
1_013.txt | AC | 1 ms | 256 KB |
1_014.txt | AC | 1 ms | 256 KB |
1_015.txt | WA | 1 ms | 256 KB |
1_016.txt | AC | 1 ms | 256 KB |
1_017.txt | WA | 1 ms | 256 KB |
1_018.txt | AC | 1 ms | 256 KB |
1_019.txt | WA | 1 ms | 256 KB |
1_020.txt | WA | 1 ms | 256 KB |
1_021.txt | WA | 1 ms | 256 KB |
1_022.txt | WA | 1 ms | 256 KB |
1_023.txt | WA | 1 ms | 256 KB |
1_024.txt | WA | 1 ms | 256 KB |
1_025.txt | WA | 1 ms | 256 KB |
2_026.txt | WA | 1 ms | 256 KB |
2_027.txt | WA | 1 ms | 256 KB |
2_028.txt | WA | 1 ms | 256 KB |
2_029.txt | RE | 99 ms | 256 KB |
2_030.txt | RE | 98 ms | 256 KB |
2_031.txt | RE | 99 ms | 256 KB |
2_032.txt | RE | 98 ms | 256 KB |
2_033.txt | RE | 98 ms | 256 KB |
2_034.txt | RE | 97 ms | 256 KB |
2_035.txt | RE | 98 ms | 256 KB |
2_036.txt | RE | 98 ms | 256 KB |
2_037.txt | AC | 1 ms | 256 KB |
2_038.txt | WA | 1 ms | 256 KB |
2_039.txt | AC | 1 ms | 256 KB |
2_040.txt | RE | 96 ms | 256 KB |
2_041.txt | RE | 96 ms | 256 KB |
2_042.txt | RE | 98 ms | 256 KB |
2_043.txt | RE | 97 ms | 256 KB |
2_044.txt | RE | 99 ms | 256 KB |
2_045.txt | RE | 98 ms | 256 KB |
2_046.txt | RE | 97 ms | 256 KB |
2_047.txt | RE | 98 ms | 256 KB |
2_048.txt | RE | 98 ms | 256 KB |
2_049.txt | RE | 98 ms | 256 KB |
2_050.txt | RE | 99 ms | 256 KB |