Submission #125552

#	Time	Username	Problem	Language	Result	Execution time	Memory
125552		eriksuenderhauf	Nuclearia (CEOI15_nuclearia)	C++11	40 / 100	404 ms	120184 KiB

nuclearia

//#pragma GCC optimize("O3")
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/rope>
#define mem(a,v) memset((a), (v), sizeof (a))
#define enl printf("\n")
#define case(t) printf("Case #%d: ", (t))
#define ni(n) scanf("%d", &(n))
#define nl(n) scanf("%lld", &(n))
#define nai(a, n) for (int i = 0; i < (n); i++) ni(a[i])
#define nal(a, n) for (int i = 0; i < (n); i++) nl(a[i])
#define pri(n) printf("%d\n", (n))
#define prl(n) printf("%lld\n", (n))
#define pii pair<int, int>
#define pil pair<int, long long>
#define pll pair<long long, long long>
#define vii vector<pii>
#define vil vector<pil>
#define vll vector<pll>
#define vi vector<int>
#define vl vector<long long>
#define pb push_back
#define mp make_pair
#define fi first
#define se second
using namespace std;
using namespace __gnu_pbds;
typedef long long ll;
typedef cc_hash_table<int,int,hash<int>> ht;
typedef tree<int,null_type,less<int>,rb_tree_tag,tree_order_statistics_node_update> oset;
const double pi = acos(-1);
const int MOD = 1e9 + 7;
const int INF = 1e9 + 7;
const int MAXN = 1e6 + 5;
const double eps = 1e-9;
vector<vl> off, sl, sm;

int main() {
	int w, h, n;
	scanf("%d %d %d", &w, &h, &n);
	off.resize(h+1); sl.resize(h+1), sm.resize(h+1);
	for (int i = 0; i <= h; i++)
		off[i].resize(w+3), sl[i].resize(w+3), sm[i].resize(w+3);
	for (int i = 0; i < n; i++) {
		ll x, y, a, b;
		scanf("%lld %lld %lld %lld", &x, &y, &a, &b);
		ll l = max(1ll, x - a / b), r = min((ll)w, x + a / b);
		off[y][l] += a;
		off[y][r+1] -= a;
		sl[y][l] -= b * (x-l);
		sl[y][l+1] += b * (x-l+1);
		sl[y][x+1] -= b;
		sl[y][x+1] -= b;
		sl[y][r+1] += b*(r-x+1);
		sl[y][r+2] -= b*(r-x);
		//for (int j = max(1, y - a / b); j <= min(h, y + a / b); j++) {}
	}
	for (int i = 1; i <= h; i++) {
		for (int j = 1; j <= w; j++) {
			off[i][j] += off[i][j-1];
			sl[i][j] += sl[i][j-1];
		}
		for (int j = 1; j <= w; j++) {
			sl[i][j] += sl[i][j-1];
			//cerr << i << " " << j << " " << off[i][j] << " " << sl[i][j] << "\n";
		}
		for (int j = 1; j <= w; j++)
			sm[i][j] = sm[i-1][j] + sm[i][j-1] - sm[i-1][j-1] + sl[i][j] + off[i][j];
	}
	int q; ni(q);
	while (q--) {
		ll x1, y1, x2, y2;
		scanf("%lld %lld %lld %lld", &x1, &y1, &x2, &y2);
		ll ans = sm[y2][x2] - sm[y1-1][x2] - sm[y2][x1-1] + sm[y1-1][x1-1];
		x1 = (x2-x1+1) * (y2-y1+1);
		if ((ans % x1) * 2 >= x1)
			prl(ans / x1 + 1);
		else
			prl(ans / x1);
	}
    return 0;
}

Compilation message (stderr)

nuclearia.cpp: In function 'int main()':
nuclearia.cpp:41:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d %d", &w, &h, &n);
  ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
nuclearia.cpp:47:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%lld %lld %lld %lld", &x, &y, &a, &b);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
nuclearia.cpp:9:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
 #define ni(n) scanf("%d", &(n))
               ~~~~~^~~~~~~~~~~~
nuclearia.cpp:71:9: note: in expansion of macro 'ni'
  int q; ni(q);
         ^~
nuclearia.cpp:74:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%lld %lld %lld %lld", &x1, &y1, &x2, &y2);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 3 / 3
• Subtask 2: 2 / 2
• Subtask 3: 0 / 3
• Subtask 4: 0 / 2
• Subtask 5: 6 / 6
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