Submission #1172088
Source Code Expand
#include<bits/stdc++.h> using namespace std; #define rep(i,a,b) for(int i=a;i<b;i++) #define rrep(i,a,b) for(int i=a;i>=b;i--) int N, K, A[5050]; //----------------------------------------------------------------------------------- int L[5010][5010], R[5010][5010]; void pre() { L[0][0] = 1; rep(i, 0, N) rep(j, 0, K) if (L[i][j]) { L[i + 1][j] = 1; if (j + A[i + 1] < K) L[i + 1][j + A[i + 1]] = 1; } R[N + 1][0] = 1; rrep(i, N, 1) rep(j, 0, K) if (R[i + 1][j]) { R[i][j] = 1; if (j + A[i] < K) R[i][j + A[i]] = 1; } // For optimized solution rep(i, 0, N + 2) { rep(j, 1, K) R[i][j] += R[i][j - 1]; } } //----------------------------------------------------------------------------------- int main() { cin >> N >> K; rep(i, 1, N + 1) scanf("%d", &A[i]); pre(); int ans = 0; rep(i, 1, N + 1) { if (K <= A[i]) continue; bool ok = true; /* // Naive rep(j, 0, K) rep(k, 0, K) if (L[i - 1][j] && R[i + 1][k]) { if (K <= j + k + A[i] && j + k < K) ok = false; } */ // Optimized rep(j, 0, K) if (L[i - 1][j]) { int lo = max(K - j - A[i], 0); int hi = min(K - 1, K - j - 1); int sm = R[i + 1][hi]; if (0 < lo) sm -= R[i + 1][lo - 1]; if (sm != 0) ok = false; } if (ok) ans++; } cout << ans << endl; }
Submission Info
Submission Time | |
---|---|
Task | D - No Need |
User | hamayanhamayan |
Language | C++14 (GCC 5.4.1) |
Score | 600 |
Code Size | 1336 Byte |
Status | AC |
Exec Time | 215 ms |
Memory | 196224 KB |
Compile Error
./Main.cpp: In function ‘int main()’: ./Main.cpp:34:37: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] rep(i, 1, N + 1) scanf("%d", &A[i]); ^
Judge Result
Set Name | Sample | Subtask | All | ||||||
---|---|---|---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 300 / 300 | 300 / 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 | 2 ms | 2304 KB |
0_001.txt | AC | 2 ms | 2304 KB |
0_002.txt | AC | 2 ms | 2304 KB |
1_003.txt | AC | 2 ms | 2304 KB |
1_004.txt | AC | 2 ms | 2304 KB |
1_005.txt | AC | 2 ms | 2304 KB |
1_006.txt | AC | 2 ms | 4480 KB |
1_007.txt | AC | 2 ms | 4480 KB |
1_008.txt | AC | 6 ms | 17280 KB |
1_009.txt | AC | 6 ms | 17280 KB |
1_010.txt | AC | 5 ms | 17280 KB |
1_011.txt | AC | 5 ms | 17024 KB |
1_012.txt | AC | 5 ms | 17280 KB |
1_013.txt | AC | 5 ms | 17024 KB |
1_014.txt | AC | 5 ms | 17024 KB |
1_015.txt | AC | 6 ms | 17280 KB |
1_016.txt | AC | 2 ms | 2304 KB |
1_017.txt | AC | 2 ms | 2304 KB |
1_018.txt | AC | 2 ms | 2304 KB |
1_019.txt | AC | 5 ms | 17152 KB |
1_020.txt | AC | 5 ms | 17024 KB |
1_021.txt | AC | 5 ms | 17152 KB |
1_022.txt | AC | 3 ms | 8960 KB |
1_023.txt | AC | 3 ms | 8832 KB |
1_024.txt | AC | 5 ms | 17152 KB |
1_025.txt | AC | 5 ms | 17152 KB |
2_026.txt | AC | 2 ms | 2304 KB |
2_027.txt | AC | 2 ms | 4480 KB |
2_028.txt | AC | 2 ms | 4480 KB |
2_029.txt | AC | 189 ms | 196224 KB |
2_030.txt | AC | 188 ms | 196224 KB |
2_031.txt | AC | 132 ms | 195072 KB |
2_032.txt | AC | 39 ms | 193536 KB |
2_033.txt | AC | 132 ms | 195072 KB |
2_034.txt | AC | 39 ms | 193536 KB |
2_035.txt | AC | 39 ms | 193536 KB |
2_036.txt | AC | 215 ms | 196224 KB |
2_037.txt | AC | 2 ms | 4608 KB |
2_038.txt | AC | 2 ms | 4608 KB |
2_039.txt | AC | 2 ms | 4608 KB |
2_040.txt | AC | 120 ms | 196224 KB |
2_041.txt | AC | 132 ms | 195200 KB |
2_042.txt | AC | 180 ms | 196224 KB |
2_043.txt | AC | 102 ms | 125184 KB |
2_044.txt | AC | 118 ms | 169856 KB |
2_045.txt | AC | 75 ms | 161024 KB |
2_046.txt | AC | 101 ms | 195200 KB |
2_047.txt | AC | 134 ms | 196096 KB |
2_048.txt | AC | 160 ms | 196224 KB |
2_049.txt | AC | 156 ms | 196224 KB |
2_050.txt | AC | 152 ms | 196224 KB |