Submission #863952

#	Time	Username	Problem	Language	Result	Execution time	Memory
863952		nnhzzz	Hedgehog Daniyar and Algorithms (IZhO19_sortbooks)	C++14	21 / 100	3059 ms	43104 KiB

sortbooks

// cre: Nguyen Ngoc Hung - Train VOI 2024

#include<bits/stdc++.h>

using namespace std;

#define        __nnhzzz__  signed main()
#define          BIT(i,j)  ((i>>j)&1LL)
#define           MASK(i)  (1LL<<i)
#define            ALL(x)  (x).begin(),(x).end()
#define             SZ(x)  (int)(x).size()
#define               gcd  __gcd
#define                fi  first
#define                se  second
#define                ll  long long
#define               ull  unsigned long long
#define                ld  long double
#define                vi  vector<int>
#define               vvi  vector<vi>
#define              vvvi  vector<vvi>
#define               pii  pair<int,int>
#define              vpii  vector<pii>
#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   REPDIS(i,a,b,c)  for(int i = (a); i<=(b); i+=c)
#define              endl  "\n"
// #define               int  ll

//-------------------------------------------------------------//
const int inf = 1e9+7,LOG = 20,MAXN = 1e6+7,N = 1e2+3;
const int MOD = 1e9+7,MOD1 = 1e9+207,MOD2 = 1e9+407,MOD3 = 998244353;
//-------------------------------------------------------------//
template<typename T> bool mini(T &a, const T &b){if(a>b){a=b;return true;}return false;}
template<typename T> bool maxi(T &a, const T &b){if(a<b){a=b;return true;}return false;}

/*
----------------------------------------------------------------
    END OF TEMPLATE
----------------------------------------------------------------
    Nguyen Ngoc Hung - nnhzzz
    Training for VOI24 gold medal
----------------------------------------------------------------
*/

int a[MAXN];
int n,q;

void sub1(){
    while(q--){
        int ok = 1,l,r,k; cin >> l >> r >> k;
        vi b;
        REP(i,l,r) b.push_back(a[i]);
        REPD(i,r-l,0){
            int ma = 0,pos = 0;
            REP(j,0,i){
                if(maxi(ma,b[j]) || ma==b[j]) pos = j;
            }
            while(pos!=i){
                if(b[pos]+b[pos+1]<=k){
                    swap(b[pos],b[pos+1]);
                    ++pos;
                }else{
                    ok = 0; break;
                }
            }
        }
        if(is_sorted(ALL(b)) && ok==1) cout << 1; else cout << 0; cout << endl;
    }
}

void sub2(){
    while(q--){
        int l,r,k; cin >> l >> r >> k;
    }
}

void sub3(){
    vi fre(n+3,n+1);
    a[n+1] = inf;
    REPD(i,n,1){
        if(a[i]>a[i+1]) fre[i] = i+1;
        else fre[i] = fre[i+1];
    }
    while(q--){
        int l,r,k; cin >> l >> r >> k;
        if(fre[l]>r) cout << 1; else cout << 0; cout << endl;
    }
}

void solve(){
    cin >> n >> q;
    REP(i,1,n) cin >> a[i];
    if(n<=500 && q<=500){
        sub1(); return ;
    }
    sub3();
    if(n<=5000 && q<=5000){
        sub2(); return ;
    }
}

__nnhzzz__{
    ios::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    #define name "test"
    if(fopen(name".inp","r")){
        freopen(name".inp","r",stdin);
        freopen(name".out","w",stdout);
    }
    #define name1 "nnhzzz"
    if(fopen(name1".inp","r")){
        freopen(name1".inp","r",stdin);
        freopen(name1".out","w",stdout);
    }
    int test = 1;
    while(test--){
        solve();
    }
    cerr << "\nTime elapsed: " << 1000*clock()/CLOCKS_PER_SEC << "ms\n";
    return 0;
}

Compilation message (stderr)

sortbooks.cpp: In function 'int main()':
sortbooks.cpp:107:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  107 |         freopen(name".inp","r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
sortbooks.cpp:108:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  108 |         freopen(name".out","w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
sortbooks.cpp:112:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  112 |         freopen(name1".inp","r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
sortbooks.cpp:113:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  113 |         freopen(name1".out","w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 8 / 8
• Subtask 2: 0 / 9
• Subtask 3: 13 / 13
• Subtask 4: 0 / 17
• Subtask 5: 0 / 30
• Subtask 6: 0 / 23