Submission #1094494

#	Time	Username	Problem	Language	Result	Execution time	Memory
1094494		shidou26	Meteors (POI11_met)	C++14	100 / 100	1225 ms	65536 KiB

met

#include <bits/stdc++.h>
using namespace std;
 
#define endl '\n'
#define all(v) v.begin(), v.end()
#define filter(v) v.resize(unique(all(v)) - v.begin())
 
typedef long long ll;
typedef pair<int, int> ii;
typedef pair<ll, int> li;
 
const int MOD = 1e9 + 7;
inline ll add(ll x, ll y, ll mod = MOD) {return ((x % mod) + (y % mod)) % mod;}
inline ll sub(ll x, ll y, ll mod = MOD) {return ((x - y) % mod + mod) % mod;}
inline ll prod(ll x, ll y, ll mod = MOD) {return ((x % mod) * (y % mod)) % mod;}
 
const int N = 3e5 + 3;
 
struct fenwick_tree {
	int n;
	vector<ll> bit;
 
	void init(int Size) {
		n = Size;
		bit.resize(Size + 3, 0);
	}
 
	void update_point(int pos, ll value) {
		for(; pos <= n; pos += pos & -pos) bit[pos] += value;
	}
	
	void update(int l, int r, ll value) {
		if(l <= r) {
			update_point(l, value);
			update_point(r + 1, - value);
		}else {
			update_point(1, value);
			update_point(r + 1, -value);
			update_point(l, value);
			update_point(n + 1, -value);
		}
	}
 
	ll get(int pos) {
		ll ans = 0;
		for(; pos; pos -= pos & -pos) ans += bit[pos];
		return ans;
	}
};
 
int n, m, q;
int ids[N], needs[N], u[N], v[N], a[N];
vector<int> id[N];
 
int l[N], r[N], ans[N];
vector<int> indices[N];
 
void prepare() {
 
}
 
void input() {
	cin >> n >> m;
 
	for(int i = 1; i <= m; i++) {
		cin >> ids[i];
		id[ids[i]].push_back(i);
	}
 
	for(int i = 1; i <= n; i++) {
		cin >> needs[i];
	}
 
	cin >> q;
 
	for(int i = 1; i <= q; i++) {
		cin >> u[i] >> v[i] >> a[i];
	}
}
 
void process() {
	for(int i = 1; i <= n; i++) {
		l[i] = 1;
		r[i] = q;
		ans[i] = -1;
	}
 
	while(true) {
		bool good = false;
		for(int i = 1; i <= n; i++) {
			if(l[i] <= r[i]) {
				int m = (l[i] + r[i]) >> 1;
				indices[m].push_back(i);
				good = true;
			}
		}
 
		if(!good) break;
 
		fenwick_tree bit; bit.init(m);
		for(int i = 1; i <= q; i++) {
			bit.update(u[i], v[i], a[i]);
			for(int j = 0; j < (int)indices[i].size(); j++) {
				int current = indices[i][j];
				ll sum = 0;
				for(int k = 0; k < (int)id[current].size(); k++) {
					sum += bit.get(id[current][k]);
					if(sum >= needs[current]) break;
				}
				if(sum >= needs[current]) {
					ans[current] = i;
					r[current] = i - 1;
				}else l[current] = i + 1;
			}
			indices[i].clear();
		}
	}
 
	for(int i = 1; i <= n; i++) {
		if(ans[i] == -1) cout << "NIE" << endl;
		else cout << ans[i] << endl;
	}
}
 
int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
 
    #define task "Date_A_Live"
    if(fopen(task".inp", "r")) {
        freopen(task".inp", "r", stdin);
        freopen(task".out", "w", stdout);
    }
    
    prepare();
    
    int testcase = 1; // cin >> testcase;    
    for(int i = 1; i <= testcase; i++) {
        input();
        process();
    }
 
    cerr << "Saa, watashtachi no deito hajimemashou" << endl;
 
    return 0;
}
 
/*
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*/

Compilation message (stderr)

met.cpp: In function 'int main()':
met.cpp:131:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  131 |         freopen(task".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
met.cpp:132:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  132 |         freopen(task".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 12 / 12
• Subtask 2: 12 / 12
• Subtask 3: 12 / 12
• Subtask 4: 12 / 12
• Subtask 5: 13 / 13
• Subtask 6: 13 / 13
• Subtask 7: 13 / 13
• Subtask 8: 13 / 13