Submission #624456

#	Time	Username	Problem	Language	Result	Execution time	Memory
624456		radal	Worst Reporter 3 (JOI18_worst_reporter3)	C++17	19 / 100	205 ms	17496 KiB

worst_reporter3

#include <bits/stdc++.h>
#pragma GCC target("sse,sse2,avx2")
#pragma GCC optimize("unroll-loops,O2")
#define rep(i,l,r) for (int i = l; i < r; i++)
#define repr(i,r,l) for (int i = r; i >= l; i--)
#define X first
#define Y second
#define all(x) (x).begin() , (x).end()
#define pb push_back
#define endl '\n'
#define debug(x) cerr << #x << " : " << x << endl;
using namespace std;

typedef long long ll;
typedef long double ld;
typedef pair<int,int> pll;
constexpr ll N = 5e5+10,mod = 998244353,inf = 1e9+10,lg = 20;
inline int mkay(int a,int b){
    if (a+b >= mod) return a+b-mod;
    if (a+b < 0) return a+b+mod;
    return a+b;
}
 
inline int poww(int a,int k){
    if (k < 0) return 0;
    int z = 1;
    while (k){
        if (k&1) z = 1ll*z*a%mod;
        a = 1ll*a*a%mod;
        k /= 2;
    } 
    return z; 
}
int d[N];
int po[N/500+10][N/500+10];
int main(){
    ios :: sync_with_stdio(0); cin.tie(0);
    int n,q;
    cin >> n >> q;
    bool fl = 1;
    rep(i,1,n+1){
        cin >> d[i];
        if (d[i] != 1) fl = 0;
    }
    if (fl){
        while (q--){
            int t,l,r;
            cin >> t >> l >> r;
            if (t < l || t-n > r){
                cout << 0 << endl;
                continue;
            }
            cout << min(t,r)-max(l,t-n)+1 << endl;
        }
        return 0;
    }
    rep(i,0,1001) po[0][i] = i;
    rep(i,1,n+1) po[i][0] = -i;
    rep(j,1,1001){
        rep(i,1,n+1){
            if (po[i-1][j]-po[i][j-1] >= d[i]+1) po[i][j] = po[i-1][j]-1;
            else po[i][j] = po[i][j-1];
        }
    }
    while (q--){
        int t,l,r;
        cin >> t >> l >> r;
        int ans = 0;
        rep(i,0,n+1) if (po[i][t] >= l && po[i][t] <= r) ans++;
        cout << ans << endl;
    }
    return 0;
}

• Subtask 1: 7 / 7
• Subtask 2: 12 / 12
• Subtask 3: 0 / 81