# |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
580484 |
2022-06-21T10:33:04 Z |
pragmatist |
Miners (IOI07_miners) |
C++17 |
|
180 ms |
101200 KB |
/*#pragma comment(linker, "/stack:200000000")
#pragma GCC optimize("O3")
#pragma GCC target ("avx2")
#pragma GCC optimize("Ofast")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#pragma GCC optimize("unroll-loops")*/
#include<bits/stdc++.h>
#define sz(v) (int)v.size()
#define ll long long
#define pb push_back
#define x first
#define y second
#define all(v) v.begin(), v.end()
#define rall(v) v.rbegin(), v.rend()
#define nl "\n"
using namespace std;
using pii = pair<int, int>;
const int N = (int)1e5 + 7;
const int inf = (int)1e9 + 7;
const ll INF = (ll)1e18 + 7;
const ll MOD = (ll)998244353;
pii dir[] = {{1, 0}, {0, 1}, {-1, 0}, {0, -1}};
int n, a[N], dp[N][4][4][4][4];
string s;
void solve() {
cin >> n >> s;
for(int i = 1; i <= n; ++i) {
if(s[i - 1] == 'M') a[i] = 1;
if(s[i - 1] == 'F') a[i] = 2;
if(s[i - 1] == 'B') a[i] = 3;
for(int x = 0; x <= 3; ++x) {
for(int y = 0; y <= 3; ++y) {
for(int z = 0; z <= 3; ++z) {
for(int w = 0; w <= 3; ++w) {
dp[i][x][y][z][w] = -inf;
}
}
}
}
}
dp[1][0][a[1]][0][0] = 1;
dp[1][0][0][0][a[1]] = 1;
for(int i = 1; i < n; ++i) {
for(int x = 0; x <= 3; ++x) {
for(int y = 0; y <= 3; ++y) {
for(int w = 0; w <= 3; ++w) {
for(int z = 0; z <= 3; ++z) {
int dis = (x != y) + (a[i + 1] != x && a[i + 1] != y) + 1;
int sid = (w != z) + (a[i + 1] != w && a[i + 1] != z) + 1;
dis -= (x == 0 || y == 0);
sid -= (w == 0 || z == 0);
dp[i + 1][y][a[i + 1]][w][z] = max(dp[i + 1][y][a[i + 1]][w][z], dp[i][x][y][w][z] + dis);
dp[i + 1][x][y][z][a[i + 1]] = max(dp[i + 1][x][y][z][a[i + 1]], dp[i][x][y][w][z] + sid);
}
}
}
}
}
int ans = 0;
for(int x = 0; x <= 3; ++x) {
for(int y = 0; y <= 3; ++y) {
for(int z = 0; z <= 3; ++z) {
for(int w = 0; w <= 3; ++w) {
ans = max(ans, dp[n][x][y][z][w]);
}
}
}
}
cout << ans << nl;
}
signed main() {
ios_base::sync_with_stdio(NULL);
cin.tie(0);
cout.tie(0);
int test = 1;
//cin >> test;
while(test--) {
solve();
}
return 0;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
340 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
340 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
332 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
340 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
340 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
340 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
1236 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
9 ms |
5380 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
15 ms |
10324 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
53 ms |
25548 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
137 ms |
75900 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
180 ms |
101200 KB |
Output is correct |