Submission #51879

#	Time	Username	Problem	Language	Result	Execution time	Memory
51879		chpipis	Popeala (CEOI16_popeala)	C++11	0 / 100	934 ms	2364 KiB

popeala

#include <bits/stdc++.h>

using namespace std;

#define fi first
#define se second
#define mp make_pair
#define pb push_back
#define pf push_front
#define iter(v, i) for (__typeof__((v).begin()) i = (v).begin(); i != (v).end(); i++)
#define fast_io_without_cstdio ios_base::sync_with_stdio(false), cin.tie(NULL)
#define all(v) (v).begin(), (v).end()
#define rep(i, s, e) for (int i = s; i < e; i++)

// START for segment tree
#define params int p, int L, int R
#define housekeep int mid = (L + R) >> 1, left = p << 1, right = left | 1
// END

#ifdef __linux__
#define gc getchar_unlocked
#define pc putchar_unlocked
#else
#define gc getchar
#define pc putchar
#endif

#if __cplusplus <= 199711L
template<class BidirIt>
BidirIt prev(BidirIt it, typename iterator_traits<BidirIt>::difference_type n = 1) {
    advance(it, -n);
    return it;
}

template<class ForwardIt>
ForwardIt next(ForwardIt it, typename iterator_traits<ForwardIt>::difference_type n = 1) {
    advance(it, n);
    return it;
}
#endif

typedef long long ll;
typedef pair<int, int> ii;
typedef vector<int> vi;
typedef vector<ii> vii;
typedef long double ldouble;

const double EPS = 1e-9;
const double PI = 3.141592653589793238462;

template<typename T>
inline T sq(T a) { return a * a; }

//#ifdef LOCAL_MACHINE
//#endif

const int INF = 2e9 + 5;
const int MAX_N = 55;
const int MAX_T = 2e4 + 5;

int pts[MAX_T];
int len[MAX_T][MAX_N];
char str[MAX_T];
int dp[MAX_N][MAX_T];
bool seen[MAX_N];
int pref[MAX_N][MAX_T];

int main() {
    //freopen("", "r", stdin);
    //freopen("", "w", stdout);
    int n, t, s;
    scanf("%d %d %d", &n, &t, &s);
    for (int i = 1; i <= t; i++) {
        scanf("%d", &pts[i]);
        pts[i] += pts[i - 1];
    }
    for (int i = 1; i <= n; i++) {
        scanf(" %s", str + 1);
        for (int j = 1; j <= t; j++) {
            if (str[j] == '1')
                len[j][i] = len[j - 1][i] + 1;
            else
                len[j][i] = 0;
        }
    }
    for (int k = 1; k <= s; k++) {
        for (int i = 1; i <= t; i++) {
            dp[k][i] = INF;
            if (i < k) continue;
            memset(seen, false, sizeof seen);
            int pos = i;
            int x = n;
            for (int j = 1; j <= n; j++) {
                if (len[i][j] == 0) {
                    seen[j] = true;
                    x--;
                }
            }
            while (true) {
                //printf("for (k: %d, i: %d) now at (pos: %d, x: %d)\n", k, i, pos, x);
                if (pos < k) break;
                if (x < 0) break;
                dp[k][i] = min(dp[k][i], pref[x][pos - 1] + x * pts[i]);
                int who = -1, nxt = 0;
                for (int j = 1; j <= n; j++)
                    if (!seen[j] && pos - len[i][j] > nxt) {
                        nxt = pos - len[i][j];
                        who = j;
                    }
                if (who == -1) break;
                seen[who] = true;
                pos = nxt;
                x--;
            }
        }
        for (int x = 0; x <= n; x++) {
            pref[x][k - 1] = INF;
            for (int i = k; i <= t; i++) {
                pref[x][i] = min(pref[x][i - 1], dp[k][i] - x * pts[i]);
                //printf("pref[%d][%d] = %d\n", x, i, pref[x][i]);
           }
        }
    }
    for (int k = 1; k <= s; k++)
        printf("%d\n", dp[k][t]);
    return 0;
}

Compilation message (stderr)

popeala.cpp: In function 'int main()':
popeala.cpp:72:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d %d", &n, &t, &s);
     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
popeala.cpp:74:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d", &pts[i]);
         ~~~~~^~~~~~~~~~~~~~~
popeala.cpp:78:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf(" %s", str + 1);
         ~~~~~^~~~~~~~~~~~~~~~

• Subtask 1: 0 / 8
• Subtask 2: 0 / 9
• Subtask 3: 0 / 9
• Subtask 4: 0 / 74