Submission #699649

#	Time	Username	Problem	Language	Result	Execution time	Memory
699649		Sam_a17	Popeala (CEOI16_popeala)	C++17	8 / 100	43 ms	5460 KiB

popeala

#define _CRT_SECURE_NO_WARNINGS
#include <bits/stdc++.h>
//#include "temp.cpp"
#include <cstdio>
using namespace std;
  
#ifndef ONLINE_JUDGE
#define dbg(x) cerr << #x <<" "; print(x); cerr << endl;
#else
#define dbg(x)
#endif
  
#define sz(x) (int)x.size()
#define len(x) (int)x.length()
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
#define clr(x) (x).clear()
#define uniq(x) x.resize(unique(all(x)) - x.begin());
#define blt __builtin_popcount
  
#define pb push_back
#define popf pop_front
#define popb pop_back
#define ld long double
#define ll long long

void print(long long t) {cerr << t;}
void print(int t) {cerr << t;}
void print(string t) {cerr << t;}
void print(char t) {cerr << t;}
void print(double t) {cerr << t;}
void print(long double t) {cerr << t;}
void print(unsigned long long t) {cerr << t;}
  
template <class T, class V> void print(pair <T, V> p);
template <class T> void print(vector <T> v);
template <class T> void print(set <T> v);
template <class T, class V> void print(map <T, V> v);
template <class T> void print(multiset <T> v);
template <class T, class V> void print(T v[],V n) {cerr << "["; for(int i = 0; i < n; i++) {print(v[i]); cerr << " "; } cerr << "]";}
template <class T, class V> void print(pair <T, V> p) {cerr << "{"; print(p.first); cerr << ","; print(p.second); cerr << "}";}
template <class T> void print(vector <T> v) {cerr << "[ "; for (T i : v) {print(i); cerr << " ";} cerr << "]";}
template <class T> void print(set <T> v) {cerr << "[ "; for (T i : v) {print(i); cerr << " ";} cerr << "]";}
template <class T> void print(multiset <T> v) {cerr << "[ "; for (T i : v) {print(i); cerr << " ";} cerr << "]";}
template <class T, class V> void print(map <T, V> v) {cerr << "[ "; for (auto i : v) {print(i); cerr << " ";} cerr << "]";}
template <class T> void print(deque <T> v) {cerr << "[ "; for (T i : v) {print(i); cerr << " ";} cerr << "]";}
  
#include <ext/pb_ds/assoc_container.hpp>
using namespace __gnu_pbds;
#define nl '\n'
  
// for random generations
// mt19937 myrand(chrono::steady_clock::now().time_since_epoch().count());
mt19937 myrand(373);
  
// for grid problems
int dx[8] = {-1,0,1,0,1,-1,1,-1};
int dy[8] = {0,1,0,-1,1,1,-1,-1};
  
// lowest / (1 << 17) >= 1e5 / (1 << 18) >= 2e5 / (1 << 21) >= 1e6
void fastIO() {
  ios_base::sync_with_stdio(false);
  cin.tie(nullptr); cout.tie(nullptr);
}
// file in/out
void setIO(string str = "") {
  fastIO();
  
  if(str == "input") {
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
  } else {
    // freopen("skis.in", "r", stdin);
    // freopen("skis.out", "w", stdout);
  }
}
// Indexed Set  
template <class T> using Tree = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
const int N = 2e4 + 10, M = 60, inf = 2e9;
long long n, t, s, p[N], left_bad[M][N];
vector<long long> row_bad[N];
long long dp[M][N];
char a[M][N];


long long pmin[M][N];

void solve_() {
  cin >> n >> t >> s;

  for(int i = 1; i <= t; i++) {
    cin >> p[i];

    p[i] = p[i - 1] + p[i];
  }

  for(int i = 1; i <= n; i++) {
    for(int j = 1; j <= t; j++) {
      cin >> a[i][j];
    }
  }

  for(int i = 0; i <= s; i++) {
    for(int j = 0; j <= t; j++) {
      dp[i][j] = inf;
    }
  }

  for(int i = 1; i <= n; i++) {
    left_bad[i][0] = 0;
    for(int j = 1; j <= t; j++) {
      if(a[i][j] == '0') {
        left_bad[i][j] = j;
      } else {
        left_bad[i][j] = left_bad[i][j - 1];
      }
      row_bad[j].push_back(left_bad[i][j]);
    }
  }

  for(int i = 1; i <= t; i++) {
    row_bad[i].push_back(i);
    sort(all(row_bad[i]));
    reverse(all(row_bad[i]));
  }

  dp[1][0] = 0;
  for(int i = 1; i <= t; i++) {
    int cnt = 0;
    for(int j = 0; j < sz(row_bad[i]); j++) {
      if(row_bad[i][j] == 0) {
        cnt++;
      }
    }
    dp[1][i] = cnt * p[i]; 
  }

  for(int i = 2; i <= s; i++) {

    for(int k = 0; k <= n; k++) {
      for(int j = 1; j <= t; j++) {
        if(j == 1) {
          pmin[k][j] = dp[i - 1][j] - p[j] * k;
        } else {
          pmin[k][j] = min(pmin[k][j - 1], dp[i - 1][j] - p[j] * k);
        }
      }
    }

    for(int j = i; j <= t; j++) {
      
      for(int k = 1; k < sz(row_bad[j]); k++) {
        int l = row_bad[j][k], r = row_bad[j][k - 1];
        int cnt = sz(row_bad[j]) - k;
        if(l < r) {
          dp[i][j] = min(dp[i][j], pmin[cnt][r - 1] + p[j] * cnt);
        }
      }

      if(row_bad[j].back() != 0) {
        dp[i][j] = min(dp[i][j], pmin[0][row_bad[j].back() - 1]);
      }
    }
  }

  //
  for(int i = 1; i <= s; i++) {
    cout << dp[i][t] << '\n';
  }
}

int main() {
  setIO();
 
  auto solve = [&](int test_case)-> void {
    for(int i = 1; i <= test_case; i++) {
      solve_();
    }
  };
  
  int test_cases = 1;
  // cin >> test_cases;
  solve(test_cases);
  
  return 0;
}

Compilation message (stderr)

popeala.cpp: In function 'void setIO(std::string)':
popeala.cpp:70:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   70 |     freopen("input.txt", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
popeala.cpp:71:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   71 |     freopen("output.txt", "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

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