Submission #1282259

#	Time	Username	Problem	Language	Result	Execution time	Memory
1282259		MMihalev	Mosaic (IOI24_mosaic)	C++20	22 / 100	175 ms	205748 KiB

mosaic

#include<iostream>
#include<algorithm>
#include<vector>
#include "mosaic.h"
using namespace std;
const int MAX_N=5e3+5;
int a[MAX_N][MAX_N];
int p[MAX_N][MAX_N];
int n,q;
vector<long long>ans;
int query(int x1,int x2,int y1,int y2)
{
    return p[x2][y2]-p[x1-1][y2]-p[x2][y1-1]+p[x1-1][y1-1];
}
std::vector<long long> mosaic(std::vector<int> X, std::vector<int> Y,std::vector<int> T, std::vector<int> B,std::vector<int> L, std::vector<int> R)
{
    n=X.size();
    q=T.size();
    ans.resize(q);

    for(int j=1;j<=n;j++)
    {
        a[1][j]=X[j-1];
    }
    for(int i=1;i<=n;i++)
    {
        a[i][1]=Y[i-1];
    }

    for(int i=2;i<=n;i++)
    {
        for(int j=2;j<=n;j++)
        {
            if(a[i-1][j]+a[i][j-1]==0)a[i][j]=1;
            else a[i][j]=0;
        }
    }

    for(int i=1;i<=n;i++)
    {
        for(int j=1;j<=n;j++)
        {
            p[i][j]=p[i-1][j]+a[i][j]+p[i][j-1]-p[i-1][j-1];
        }
    }

    for(int i=1;i<=q;i++)
    {
        ans[i-1]=query(T[i-1]+1,B[i-1]+1,L[i-1]+1,R[i-1]+1);
    }

    return ans;
}

• Subtask 0: 0 / 0
• Subtask 1: 5 / 5
• Subtask 2: 7 / 7
• Subtask 3: 0 / 7
• Subtask 4: 10 / 10
• Subtask 5: 0 / 8
• Subtask 6: 0 / 22
• Subtask 7: 0 / 19
• Subtask 8: 0 / 22