Submission #2706118
Source Code Expand
#include <bits/stdc++.h> using namespace std; int n, x, z; int a[220], b[220], ac, bc, l[220]; bool g[220][220], v[220]; map<int, int> q; bool P(int x) { if (x < 2) { return false; } for (int i = 2; i * i <= x; i++) { if (x % i == 0) { return false; } } return true; } bool dfs(int x) { for (int i = 0; i < bc; i++) { if (g[x][i] && !v[i]) { v[i] = true; if (l[i] == -1 || dfs(l[i])) { return l[i] = x, true; } } } return false; } int main() { scanf("%d", &n); for (int i = 0; i < n; i++) { scanf("%d", &x); q[x] ^= 1; q[x + 1] ^= 1; } for (pair<int, int> i: q) { if (i.second == 0) { continue; } if (i.first & 1) { a[ac++] = i.first; } else { b[bc++] = i.first; } } for (int i = 0; i < ac; i++) { for (int j = 0; j < bc; j++) { if (P(abs(a[i] - b[j]))) { g[i][j] = true; } } } memset(l, -1, sizeof l); for (int i = 0; i < ac; i++) { memset(v, 0, sizeof v); if (dfs(i)) { z++; } } if ((ac - z) & 1) { z--; } printf("%d\n", ac + bc - z); return 0; }
Submission Info
Submission Time | |
---|---|
Task | F - Prime Flip |
User | Factorio |
Language | C++14 (GCC 5.4.1) |
Score | 1200 |
Code Size | 1110 Byte |
Status | AC |
Exec Time | 12 ms |
Memory | 256 KB |
Compile Error
./Main.cpp: In function ‘int main()’: ./Main.cpp:30:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ ./Main.cpp:32:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &x); ^
Judge Result
Set Name | Sample | All | ||||
---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 1200 / 1200 | ||||
Status |
|
|
Set Name | Test Cases |
---|---|
Sample | 0_00.txt, 0_01.txt, 0_02.txt |
All | 0_00.txt, 0_01.txt, 0_02.txt, 1_00.txt, 1_01.txt, 1_02.txt, 1_03.txt, 1_04.txt, 1_05.txt, 1_06.txt, 1_07.txt, 1_08.txt, 1_09.txt, 1_10.txt, 1_11.txt, 1_12.txt, 1_13.txt, 1_14.txt, 1_15.txt, 1_16.txt, 1_17.txt, 1_18.txt, 1_19.txt, 1_20.txt, 1_21.txt, 1_22.txt, 1_23.txt, 1_24.txt, 1_25.txt, 1_26.txt, 1_27.txt, 1_28.txt, 1_29.txt, 1_30.txt, 1_31.txt, 1_32.txt, 1_33.txt, 1_34.txt, 1_35.txt, 1_36.txt, 1_37.txt, 1_38.txt, 1_39.txt, 1_40.txt, 1_41.txt, 1_42.txt, 1_43.txt, 1_44.txt, 1_45.txt, 1_46.txt, 1_47.txt, 1_48.txt, 1_49.txt, 1_50.txt, 1_51.txt, 1_52.txt, 1_53.txt, 1_54.txt, 1_55.txt, 1_56.txt, 1_57.txt, 1_58.txt, 1_59.txt, 1_60.txt, 1_61.txt, 1_62.txt, 1_63.txt, 1_64.txt, 1_65.txt, 1_66.txt, 1_67.txt, 1_68.txt, 1_69.txt, 1_70.txt, 1_71.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
0_00.txt | AC | 1 ms | 256 KB |
0_01.txt | AC | 1 ms | 256 KB |
0_02.txt | AC | 1 ms | 256 KB |
1_00.txt | AC | 1 ms | 256 KB |
1_01.txt | AC | 1 ms | 256 KB |
1_02.txt | AC | 1 ms | 256 KB |
1_03.txt | AC | 2 ms | 256 KB |
1_04.txt | AC | 1 ms | 256 KB |
1_05.txt | AC | 1 ms | 256 KB |
1_06.txt | AC | 1 ms | 256 KB |
1_07.txt | AC | 12 ms | 256 KB |
1_08.txt | AC | 10 ms | 256 KB |
1_09.txt | AC | 8 ms | 256 KB |
1_10.txt | AC | 6 ms | 256 KB |
1_11.txt | AC | 4 ms | 256 KB |
1_12.txt | AC | 4 ms | 256 KB |
1_13.txt | AC | 3 ms | 256 KB |
1_14.txt | AC | 2 ms | 256 KB |
1_15.txt | AC | 2 ms | 256 KB |
1_16.txt | AC | 3 ms | 256 KB |
1_17.txt | AC | 2 ms | 256 KB |
1_18.txt | AC | 2 ms | 256 KB |
1_19.txt | AC | 2 ms | 256 KB |
1_20.txt | AC | 2 ms | 256 KB |
1_21.txt | AC | 1 ms | 256 KB |
1_22.txt | AC | 1 ms | 256 KB |
1_23.txt | AC | 1 ms | 256 KB |
1_24.txt | AC | 1 ms | 256 KB |
1_25.txt | AC | 1 ms | 256 KB |
1_26.txt | AC | 1 ms | 256 KB |
1_27.txt | AC | 1 ms | 256 KB |
1_28.txt | AC | 1 ms | 256 KB |
1_29.txt | AC | 1 ms | 256 KB |
1_30.txt | AC | 1 ms | 256 KB |
1_31.txt | AC | 1 ms | 256 KB |
1_32.txt | AC | 1 ms | 256 KB |
1_33.txt | AC | 1 ms | 256 KB |
1_34.txt | AC | 1 ms | 256 KB |
1_35.txt | AC | 1 ms | 256 KB |
1_36.txt | AC | 1 ms | 256 KB |
1_37.txt | AC | 1 ms | 256 KB |
1_38.txt | AC | 1 ms | 256 KB |
1_39.txt | AC | 1 ms | 256 KB |
1_40.txt | AC | 10 ms | 256 KB |
1_41.txt | AC | 10 ms | 256 KB |
1_42.txt | AC | 10 ms | 256 KB |
1_43.txt | AC | 10 ms | 256 KB |
1_44.txt | AC | 10 ms | 256 KB |
1_45.txt | AC | 10 ms | 256 KB |
1_46.txt | AC | 10 ms | 256 KB |
1_47.txt | AC | 10 ms | 256 KB |
1_48.txt | AC | 10 ms | 256 KB |
1_49.txt | AC | 10 ms | 256 KB |
1_50.txt | AC | 10 ms | 256 KB |
1_51.txt | AC | 9 ms | 256 KB |
1_52.txt | AC | 10 ms | 256 KB |
1_53.txt | AC | 10 ms | 256 KB |
1_54.txt | AC | 10 ms | 256 KB |
1_55.txt | AC | 9 ms | 256 KB |
1_56.txt | AC | 1 ms | 256 KB |
1_57.txt | AC | 1 ms | 256 KB |
1_58.txt | AC | 1 ms | 256 KB |
1_59.txt | AC | 1 ms | 256 KB |
1_60.txt | AC | 1 ms | 256 KB |
1_61.txt | AC | 1 ms | 256 KB |
1_62.txt | AC | 1 ms | 256 KB |
1_63.txt | AC | 1 ms | 256 KB |
1_64.txt | AC | 1 ms | 256 KB |
1_65.txt | AC | 1 ms | 256 KB |
1_66.txt | AC | 1 ms | 256 KB |
1_67.txt | AC | 1 ms | 256 KB |
1_68.txt | AC | 1 ms | 256 KB |
1_69.txt | AC | 1 ms | 256 KB |
1_70.txt | AC | 1 ms | 256 KB |
1_71.txt | AC | 1 ms | 256 KB |