| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 65234 |
2018-08-07T06:04:58 Z |
qkxwsm |
Popeala (CEOI16_popeala) |
C++17 |
|
655 ms |
4304 KB |
/*
PROG: source
LANG: C++11
_____
.' '.
/ 0 0 \
| ^ |
| \ / |
\ '---' /
'._____.'
*/
#include <bits/stdc++.h>
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/pb_ds/assoc_container.hpp>
using namespace std;
using namespace __gnu_pbds;
struct chash
{
int operator()(int x) const
{
x ^= (x >> 20) ^ (x >> 12);
return x ^ (x >> 7) ^ (x >> 4);
}
int operator()(long long x) const
{
return x ^ (x >> 32);
}
};
template<typename T> using orderedset = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
template<typename T, typename U> using hashtable = gp_hash_table<T, U, chash>;
template<class T>
void readi(T &x)
{
T input = 0;
bool negative = false;
char c = ' ';
while (c < '-')
{
c = getchar();
}
if (c == '-')
{
negative = true;
c = getchar();
}
while (c >= '0')
{
input = input * 10 + (c - '0');
c = getchar();
}
if (negative)
{
input = -input;
}
x = input;
}
template<class T>
void printi(T output)
{
if (output == 0)
{
putchar('0');
return;
}
if (output < 0)
{
putchar('-');
output = -output;
}
int aout[20];
int ilen = 0;
while(output)
{
aout[ilen] = ((output % 10));
output /= 10;
ilen++;
}
for (int i = ilen - 1; i >= 0; i--)
{
putchar(aout[i] + '0');
}
return;
}
template<class T>
void ckmin(T &a, T b)
{
a = min(a, b);
}
template<class T>
void ckmax(T &a, T b)
{
a = max(a, b);
}
template<class T, class U>
T normalize(T x, U mod = 1000000007)
{
return (((x % mod) + mod) % mod);
}
long long randomizell(long long mod)
{
return ((1ll << 45) * rand() + (1ll << 30) * rand() + (1ll << 15) * rand() + rand()) % mod;
}
int randomize(int mod)
{
return ((1ll << 15) * rand() + rand()) % mod;
}
#define y0 ___y0
#define y1 ___y1
#define MP make_pair
#define MT make_tuple
#define PB push_back
#define PF push_front
#define LB lower_bound
#define UB upper_bound
#define fi first
#define se second
#define debug(x) cerr << #x << " = " << x << endl;
const long double PI = 4.0 * atan(1.0);
const long double EPS = 1e-10;
#define MAGIC 347
#define SINF 10007
#define CO 1000007
#define INF 1000000007
#define BIG 1000000931
#define LARGE 1696969696967ll
#define GIANT 2564008813937411ll
#define LLINF 2696969696969696969ll
#define MAXN 51
#define MAXM 20013
typedef long long ll;
typedef long double ld;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef pair<ld, ld> pdd;
int N, M, S;
ll arr[MAXM];
ll pref[MAXM];
int ok[MAXN][MAXM];
int pre[MAXN][MAXM];
ll dp[MAXN][MAXM];
ll stor[MAXN][MAXM];
vector<int> zeroes[MAXN];
vector<int> pos[MAXM];
ll cost(int L, int R)
{
R--;
ll res = 0;
for (int i = 0; i < N; i++)
{
if (pre[i][R + 1] - pre[i][L] == (R - L + 1))
{
res += (pref[R + 1] - pref[L]);
}
}
return res;
}
ll query(int L, int R)
{
int lg = (31 - __builtin_clz(R - L + 1));
return min(stor[lg][L], stor[lg][R - (1 << lg) + 1]);
}
int32_t main()
{
ios_base::sync_with_stdio(0);
srand(time(0));
// cout << fixed << setprecision(10);
// cerr << fixed << setprecision(10);
if (fopen("input.in", "r"))
{
freopen ("input.in", "r", stdin);
freopen ("output.out", "w", stdout);
}
cin >> N >> M >> S;
for (int i = 0; i < M; i++)
{
cin >> arr[i];
pref[i + 1] = pref[i] + arr[i];
}
for (int i = 0; i < N; i++)
{
string temps;
cin >> temps;
for (int j = 0; j < M; j++)
{
ok[i][j] = temps[j] - '0';
pre[i][j + 1] = pre[i][j] + ok[i][j];
if (!ok[i][j]) zeroes[i].PB(j);
}
}
for (int i = 0; i <= M; i++)
{
for (int j = 0; j < N; j++)
{
if (zeroes[j].empty() || zeroes[j][0] >= i)
{
continue;
}
//cost(x - 1, j) != cost(x, j)
int idx = LB(zeroes[j].begin(), zeroes[j].end(), i) - zeroes[j].begin() - 1;
pos[i].PB(zeroes[j][idx] + 1);
//u want an index <i
}
pos[i].PB(0); pos[i].PB(1);
pos[i].PB(i);
sort(pos[i].begin(), pos[i].end());
pos[i].erase(unique(pos[i].begin(), pos[i].end()), pos[i].end());
while(pos[i].back() > i)
{
pos[i].pop_back();
}
}
for (int i = 0; i < M; i++)
{
dp[0][i] = LLINF;
}
dp[0][0] = 0;
for (int i = 1; i <= S; i++)
{
//build a table on dp[i - 1]
for (int j = 0; j <= M; j++)
{
stor[0][j] = dp[i - 1][j];
}
for (int j = 1; j <= 20; j++)
{
for (int k = 0; k <= M; k++)
{
if (k + (1 << (j - 1)) > M)
{
stor[j][k] = LLINF;
}
else
{
stor[j][k] = min(stor[j - 1][k], stor[j - 1][k + (1 << (j - 1))]);
}
}
}
for (int j = 0; j <= M; j++)
{
dp[i][j] = LLINF;
//there's actually only 50 possible costs so you want to find the locations!
// for (int k : pos[j])
// {
// if (k >= j) break;
// // if (k >= j) cerr << k << ' ' << j << endl;
// // assert(0 <= k && k < j);
// ckmin(dp[i][j], dp[i - 1][k] + cost(k, j));
// }
// for (int k = 0; k < j; k++)
// {
// ckmin(dp[i][j], dp[i - 1][k] + cost(k, j));
// }
for (int k = 0; k < pos[j].size() - 1; k++)
{
int lo = pos[j][k], hi = pos[j][k + 1] - 1; ll c = cost(lo, j);
ckmin(dp[i][j], query(lo, hi) + c);
}
}
cout << dp[i][M] << '\n';
}
// cerr << "time elapsed = " << (clock() / (CLOCKS_PER_SEC / 1000)) << " ms" << endl;
return 0;
}
Compilation message
popeala.cpp: In function 'int32_t main()':
popeala.cpp:264:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for (int k = 0; k < pos[j].size() - 1; k++)
~~^~~~~~~~~~~~~~~~~~~
popeala.cpp:181:11: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
freopen ("input.in", "r", stdin);
~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
popeala.cpp:182:11: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
freopen ("output.out", "w", stdout);
~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
888 KB |
Output is correct |
| 2 |
Incorrect |
4 ms |
1252 KB |
Output isn't correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
148 ms |
2252 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
655 ms |
4304 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
888 KB |
Output is correct |
| 2 |
Incorrect |
4 ms |
1252 KB |
Output isn't correct |
