Submission #417859

#	Time	Username	Problem	Language	Result	Execution time	Memory
417859		ioi	Seats (IOI18_seats)	C++14	5 / 100	4094 ms	43676 KiB

seats

#include "seats.h"
#include<bits/stdc++.h>
using namespace std ;


vector<vector<int> > matrix ;

vector<int> r , c ;
int h , w ;

void give_initial_chart(int H, int W, vector<int> R, vector<int> C) {
    r = R , c = C ;
    h = H , w = W ;

    matrix.resize(H);
    for(int i = 0 ;i < H ; i ++)matrix[i].resize(W);

    for(int i = 0 ; i < H * W ; i ++)
        matrix[R[i]][C[i]] = i  ;




}

int swap_seats(int a, int b) {


    swap(matrix[r[a]][c[a]] , matrix[r[b]][c[b]]);

    swap(r[a] , r[b]);
    swap(c[a] , c[b]);

    int ans = 0 ;


    for(int i = 0 ; i < h ; i ++ ){
        for(int j = 0 ; j < w ; j ++ ){

            for(int er = i ; er < h ; er ++){

                for(int ec = j ; ec < w ; ec ++){


                    long long  sum = 0 ;

                    for(int ii = i ; ii <= er ; ii ++)
                        for(int jj = j ; jj <= ec ; jj ++)
                            sum += matrix[ii][jj];
                    long long sz = (ec - j + 1) * (er - i + 1);
                    if(sum == sz * (sz - 1) / 2)ans ++ ;
                }
            }

        }
    }
    return ans;
}

• Subtask 1: 5 / 5
• Subtask 2: 0 / 6
• Subtask 3: 0 / 20
• Subtask 4: 0 / 6
• Subtask 5: 0 / 33
• Subtask 6: 0 / 30