oj.uz

Submission #886838

# Submission time Handle Problem Language Result Execution time Memory
886838 2023-12-13T03:32:29 Z Kutan Lasers (NOI19_lasers) C++14
100 / 100
 108 ms 35524 KB 
// Cao Quang Hung
#include <cassert>
#include <cctype>
#include <cerrno>
#include <cfloat>
#include <ciso646>
#include <climits>
#include <clocale>
#include <cmath>
#include <csetjmp>
#include <csignal>
#include <cstdarg>
#include <cstddef>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <ctime>
#include <ccomplex>
#include <cfenv>
#include <cinttypes>
#include <cstdbool>
#include <cstdint>
#include <ctgmath>
#include <cwchar>
#include <cwctype>
#include <algorithm>
#include <bitset>
#include <complex>
#include <deque>
#include <exception>
#include <fstream>
#include <functional>
#include <iomanip>
#include <ios>
#include <iosfwd>
#include <iostream>
#include <istream>
#include <iterator>
#include <limits>
#include <list>
#include <locale>
#include <map>
#include <memory>
#include <new>
#include <numeric>
#include <ostream>
#include <queue>
#include <set>
#include <sstream>
#include <stack>
#include <stdexcept>
#include <streambuf>
#include <string>
#include <typeinfo>
#include <utility>
#include <valarray>
#include <vector>
#include <array>
#include <atomic>
#include <chrono>
#include <condition_variable>
#include <forward_list>
#include <future>
#include <initializer_list>
#include <mutex>
#include <random>
#include <ratio>
#include <regex>
#include <scoped_allocator>
#include <system_error>
#include <thread>
#include <tuple>
#include <typeindex>
#include <type_traits>
#include <unordered_map>
#include <unordered_set>

using namespace std;
#define pb push_back
#define eb emplace_back
#define mp make_pair
#define pii pair<int,int>
#define pll pair<long long , long long>
#define vi vector<int>
#define vpii vector<pii>
#define SZ(x) ((int)(x.size()))
#define fi first
#define se second
#define IN(x,y) ((y).find((x))!=(y).end())
#define ALL(t) t.begin(),t.end()
#define FOREACH(i,t) for (typeof(t.begin()) i=t.begin(); i!=t.end(); i++)
#define REP(i,a,b) for(int (i)=(a);(i)<=(b);++i)
#define REPD(i,a,b) for(int (i)=(a); (i)>=(b);--i)
#define FOR(i, n) for (int (i) = 0; (i) < (n); ++(i))
#define dem(x) __builtin_popcount(x)
#define Mask(x) (1LL << (x))
#define BIT(x, i) ((x) >> (i) & 1)
#define ln '\n'
#define io_faster ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
///mt19937 rnd(time(0));

const int INF = 1e9 , mod = 1e9 + 7;

template <class T1, class T2>
inline T1 mul(T1& x, const T2 &k){ return x = (1LL * x * k) % mod; }

template <class T1 , class T2>
inline T1 pw(T1 x, T2 k){T1 res = 1; for (; k ; k >>= 1){ if (k & 1) mul(res, x); mul(x, x); } return res;}

template <class T>
inline bool minimize(T &x, const T &y){ if (x > y){x = y; return 1;} return 0; }

template <class T>
inline bool maximize(T &x, const T &y){ if (x < y){x = y; return 1;} return 0; }

template <class T>
inline void add(T &x , const T &y){ if ((x += y) >= mod) x -= mod; }

template <class T>
inline T product (const T &x , const T &y) { return 1LL * x * y % mod; }

#define PROB "a"
void file(){
    if(fopen(PROB".inp", "r")){
        freopen(PROB".inp","r",stdin);
        freopen(PROB".out","w",stdout);
    }
}
void sinh_(){
//    srand(time(0));
//    freopen(PROB".inp" , "w" , stdout);
//    int n;
}

typedef long long ll;
typedef double db;
const int N = 5e5 + 5;
int L, R;
vector<int> length[N];
void readip(){
    cin >> L >> R;
    REP(i, 1, R) {
        int x; cin >> x;
        length[i].assign(x, 0);
        for (auto &val : length[i])
            cin >> val;
    }
}

namespace sub12{
    bool check() {
        REP(i, 1, R) if (length[i].size() > 1)
            return false;
        return true;
    }

    void solve() {
        int MaxLength = 0;
        REP(i, 1, R) maximize(MaxLength, length[i][0]);
        if (L - MaxLength > MaxLength) cout << 0 << ln;
        else cout << MaxLength - (L - MaxLength) << ln;
    }
};

namespace subfull{
    void solve() {
        vpii segments;
        REP(i, 1, R) {
            int sum = 0;
            for (int l : length[i])  sum += l;

            int sumlef = 0;
            for (int l : length[i]) {
                int sumrig = sum - sumlef - l;
                int s = sumlef;
                int e = L - sumrig;
                if (max(s, e - l) < min(s + l, e))
                    segments.eb(max(s, e - l),  min(s + l, e));
                sumlef += l;
            }
        }
        sort(ALL(segments));

        if (segments.empty()) {
            cout << 0 << ln;
            return;
        }

        vpii hihi;
        hihi.eb(segments[0]);
        for (int i = 1; i < segments.size(); ++i) {
            int l = segments[i].first, r = segments[i].second;
            if (r <= hihi.back().second) continue;
            if (l <= hihi.back().second) hihi.back().second = r;
            else hihi.eb(l, r);
        }
        int res = 0;
        for (auto [l, r] : hihi) {
            res += r - l;
            // cout << l << ' ' << r << ln;
        }
        cout << res;
    }    
};

void solve(){       
    subfull::solve();
}

int main(){
    sinh_();
    io_faster
    file();
    int t = 1;
//    cin >> t;
    while (t--){
        readip();
        solve();
    }
}

Compilation message

lasers.cpp: In function 'void readip()':
lasers.cpp:92:28: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
   92 | #define REP(i,a,b) for(int (i)=(a);(i)<=(b);++i)
      |                            ^
lasers.cpp:142:5: note: in expansion of macro 'REP'
  142 |     REP(i, 1, R) {
      |     ^~~
lasers.cpp: In function 'bool sub12::check()':
lasers.cpp:92:28: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
   92 | #define REP(i,a,b) for(int (i)=(a);(i)<=(b);++i)
      |                            ^
lasers.cpp:152:9: note: in expansion of macro 'REP'
  152 |         REP(i, 1, R) if (length[i].size() > 1)
      |         ^~~
lasers.cpp: In function 'void sub12::solve()':
lasers.cpp:92:28: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
   92 | #define REP(i,a,b) for(int (i)=(a);(i)<=(b);++i)
      |                            ^
lasers.cpp:159:9: note: in expansion of macro 'REP'
  159 |         REP(i, 1, R) maximize(MaxLength, length[i][0]);
      |         ^~~
lasers.cpp: In function 'void subfull::solve()':
lasers.cpp:92:28: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
   92 | #define REP(i,a,b) for(int (i)=(a);(i)<=(b);++i)
      |                            ^
lasers.cpp:168:9: note: in expansion of macro 'REP'
  168 |         REP(i, 1, R) {
      |         ^~~
lasers.cpp:191:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  191 |         for (int i = 1; i < segments.size(); ++i) {
      |                         ~~^~~~~~~~~~~~~~~~~
lasers.cpp:198:19: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
  198 |         for (auto [l, r] : hihi) {
      |                   ^
lasers.cpp: In function 'void file()':
lasers.cpp:125:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  125 |         freopen(PROB".inp","r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
lasers.cpp:126:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  126 |         freopen(PROB".out","w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 12124 KB Output is correct
2 Correct 3 ms 12124 KB Output is correct
3 Correct 3 ms 12136 KB Output is correct
4 Correct 3 ms 12124 KB Output is correct
5 Correct 5 ms 12124 KB Output is correct
6 Correct 3 ms 12124 KB Output is correct
7 Correct 3 ms 12124 KB Output is correct
8 Correct 3 ms 12124 KB Output is correct
9 Correct 3 ms 12124 KB Output is correct
10 Correct 3 ms 12124 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 12124 KB Output is correct
2 Correct 3 ms 12124 KB Output is correct
3 Correct 3 ms 12136 KB Output is correct
4 Correct 3 ms 12124 KB Output is correct
5 Correct 5 ms 12124 KB Output is correct
6 Correct 3 ms 12124 KB Output is correct
7 Correct 3 ms 12124 KB Output is correct
8 Correct 3 ms 12124 KB Output is correct
9 Correct 3 ms 12124 KB Output is correct
10 Correct 3 ms 12124 KB Output is correct
11 Correct 3 ms 12124 KB Output is correct
12 Correct 86 ms 33096 KB Output is correct
13 Correct 3 ms 12120 KB Output is correct
14 Correct 3 ms 12124 KB Output is correct
15 Correct 3 ms 12124 KB Output is correct
16 Correct 3 ms 12244 KB Output is correct
17 Correct 97 ms 29756 KB Output is correct
18 Correct 3 ms 12124 KB Output is correct
19 Correct 3 ms 12124 KB Output is correct
20 Correct 3 ms 12124 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 28 ms 16080 KB Output is correct
2 Correct 8 ms 12892 KB Output is correct
3 Correct 8 ms 13400 KB Output is correct
4 Correct 31 ms 17100 KB Output is correct
5 Correct 14 ms 14288 KB Output is correct
6 Correct 23 ms 15580 KB Output is correct
7 Correct 3 ms 12124 KB Output is correct
8 Correct 25 ms 16076 KB Output is correct
9 Correct 16 ms 15320 KB Output is correct
10 Correct 32 ms 16968 KB Output is correct

Subtask #4
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 12124 KB Output is correct
2 Correct 3 ms 12124 KB Output is correct
3 Correct 3 ms 12124 KB Output is correct
4 Correct 3 ms 12200 KB Output is correct
5 Correct 3 ms 12124 KB Output is correct
6 Correct 3 ms 12124 KB Output is correct
7 Correct 3 ms 12240 KB Output is correct
8 Correct 3 ms 12124 KB Output is correct
9 Correct 3 ms 12124 KB Output is correct
10 Correct 3 ms 12140 KB Output is correct

Subtask #5
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 28 ms 16080 KB Output is correct
2 Correct 8 ms 12892 KB Output is correct
3 Correct 8 ms 13400 KB Output is correct
4 Correct 31 ms 17100 KB Output is correct
5 Correct 14 ms 14288 KB Output is correct
6 Correct 23 ms 15580 KB Output is correct
7 Correct 3 ms 12124 KB Output is correct
8 Correct 25 ms 16076 KB Output is correct
9 Correct 16 ms 15320 KB Output is correct
10 Correct 32 ms 16968 KB Output is correct
11 Correct 3 ms 12124 KB Output is correct
12 Correct 3 ms 12124 KB Output is correct
13 Correct 3 ms 12124 KB Output is correct
14 Correct 3 ms 12200 KB Output is correct
15 Correct 3 ms 12124 KB Output is correct
16 Correct 3 ms 12124 KB Output is correct
17 Correct 3 ms 12240 KB Output is correct
18 Correct 3 ms 12124 KB Output is correct
19 Correct 3 ms 12124 KB Output is correct
20 Correct 3 ms 12140 KB Output is correct
21 Correct 98 ms 34372 KB Output is correct
22 Correct 15 ms 13784 KB Output is correct
23 Correct 10 ms 13272 KB Output is correct
24 Correct 41 ms 17096 KB Output is correct
25 Correct 94 ms 33992 KB Output is correct
26 Correct 28 ms 16588 KB Output is correct
27 Correct 13 ms 13784 KB Output is correct
28 Correct 94 ms 34096 KB Output is correct
29 Correct 95 ms 33996 KB Output is correct
30 Correct 25 ms 15564 KB Output is correct

Subtask #6
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 12124 KB Output is correct
2 Correct 3 ms 12124 KB Output is correct
3 Correct 3 ms 12136 KB Output is correct
4 Correct 3 ms 12124 KB Output is correct
5 Correct 5 ms 12124 KB Output is correct
6 Correct 3 ms 12124 KB Output is correct
7 Correct 3 ms 12124 KB Output is correct
8 Correct 3 ms 12124 KB Output is correct
9 Correct 3 ms 12124 KB Output is correct
10 Correct 3 ms 12124 KB Output is correct
11 Correct 3 ms 12124 KB Output is correct
12 Correct 86 ms 33096 KB Output is correct
13 Correct 3 ms 12120 KB Output is correct
14 Correct 3 ms 12124 KB Output is correct
15 Correct 3 ms 12124 KB Output is correct
16 Correct 3 ms 12244 KB Output is correct
17 Correct 97 ms 29756 KB Output is correct
18 Correct 3 ms 12124 KB Output is correct
19 Correct 3 ms 12124 KB Output is correct
20 Correct 3 ms 12124 KB Output is correct
21 Correct 28 ms 16080 KB Output is correct
22 Correct 8 ms 12892 KB Output is correct
23 Correct 8 ms 13400 KB Output is correct
24 Correct 31 ms 17100 KB Output is correct
25 Correct 14 ms 14288 KB Output is correct
26 Correct 23 ms 15580 KB Output is correct
27 Correct 3 ms 12124 KB Output is correct
28 Correct 25 ms 16076 KB Output is correct
29 Correct 16 ms 15320 KB Output is correct
30 Correct 32 ms 16968 KB Output is correct
31 Correct 3 ms 12124 KB Output is correct
32 Correct 3 ms 12124 KB Output is correct
33 Correct 3 ms 12124 KB Output is correct
34 Correct 3 ms 12200 KB Output is correct
35 Correct 3 ms 12124 KB Output is correct
36 Correct 3 ms 12124 KB Output is correct
37 Correct 3 ms 12240 KB Output is correct
38 Correct 3 ms 12124 KB Output is correct
39 Correct 3 ms 12124 KB Output is correct
40 Correct 3 ms 12140 KB Output is correct
41 Correct 98 ms 34372 KB Output is correct
42 Correct 15 ms 13784 KB Output is correct
43 Correct 10 ms 13272 KB Output is correct
44 Correct 41 ms 17096 KB Output is correct
45 Correct 94 ms 33992 KB Output is correct
46 Correct 28 ms 16588 KB Output is correct
47 Correct 13 ms 13784 KB Output is correct
48 Correct 94 ms 34096 KB Output is correct
49 Correct 95 ms 33996 KB Output is correct
50 Correct 25 ms 15564 KB Output is correct
51 Correct 13 ms 13780 KB Output is correct
52 Correct 106 ms 35272 KB Output is correct
53 Correct 108 ms 35488 KB Output is correct
54 Correct 22 ms 15316 KB Output is correct
55 Correct 48 ms 19400 KB Output is correct
56 Correct 29 ms 17104 KB Output is correct
57 Correct 34 ms 17520 KB Output is correct
58 Correct 101 ms 35524 KB Output is correct
59 Correct 27 ms 15452 KB Output is correct
60 Correct 41 ms 16752 KB Output is correct