Submission #294230

#	Time	Username	Problem	Language	Result	Execution time	Memory
294230		Lawliet	Nuclearia (CEOI15_nuclearia)	C++17	21 / 100	1105 ms	280440 KiB

nuclearia

#include <bits/stdc++.h>

using namespace std;
typedef long long int lli;

const int MAXN = 2500010;

int n, m, k, q;

vector<lli> v[MAXN], s[MAXN];

int main()
{
	scanf("%d %d %d",&n,&m,&k);

	for(int i = 0 ; i <= n ; i++)
		v[i].resize( m + 1 , 0 ), s[i].resize( m + 1 , 0 );

	for(int i = 1 ; i <= k ; i++)
	{
		int x, y, a, b;
		scanf("%d %d %d %d",&x,&y,&a,&b);

		for(int xa = 1 ; xa <= n ; xa++)
		{
			for(int ya = 1 ; ya <= m ; ya++)
			{
				lli dist = max( abs( x - xa ) , abs( y - ya ) );

				lli value = a - b*dist;
				value = max( value , 0LL );

				v[xa][ya] += value;
			}
		}
	}

	for(int i = 1 ; i <= n ; i++)
		for(int j = 1 ; j <= m ; j++)
			s[i][j] = s[i - 1][j] + s[i][j - 1] - s[i - 1][j - 1] + v[i][j];

	scanf("%d",&q);

	while( q-- )
	{
		int xa, ya, xb, yb;
		scanf("%d %d %d %d",&xa,&ya,&xb,&yb);

		lli sum = s[xb][yb] + s[xa - 1][ya - 1];
		sum -= s[xb][ya - 1] + s[xa - 1][yb];

		lli area = (xb - xa + 1)*(yb - ya + 1);

		lli ans = sum/area;
		if( (sum%area)*2 >= area ) ans++;

		printf("%lld\n",ans);
	}
}

Compilation message (stderr)

nuclearia.cpp: In function 'int main()':
nuclearia.cpp:14:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   14 |  scanf("%d %d %d",&n,&m,&k);
      |  ~~~~~^~~~~~~~~~~~~~~~~~~~~
nuclearia.cpp:22:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   22 |   scanf("%d %d %d %d",&x,&y,&a,&b);
      |   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
nuclearia.cpp:42:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   42 |  scanf("%d",&q);
      |  ~~~~~^~~~~~~~~
nuclearia.cpp:47:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   47 |   scanf("%d %d %d %d",&xa,&ya,&xb,&yb);
      |   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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