Submission #68379

#	Time	Username	Problem	Language	Result	Execution time	Memory
68379		Mamnoon_Siam	Treasure (different grader from official contest) (CEOI13_treasure2)	C++17	44 / 100	4 ms	720 KiB

treasure

// countTreasure Report
//#pragma GCC optimize("Ofast,unroll-loops,no-stack-protector")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")

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

#define debug(pre) cout << #pre << " = " << pre << endl
#define all(v) (v).begin(), (v).end()
#define KeepUnique(v) (v).erase( unique(all(v)), v.end() )
#define MEMSET(a, val) memset(a, val, sizeof (a))
#define PB push_back
#define endl '\n'
typedef long long ll;

inline int myrand(int l, int r) {
	int ret = rand(); ret <<= 15; ret ^= rand();
	if(ret < 0) ret = -ret; ret %= (r-l+1); ret += l;
	return ret;
}

template <typename F, typename pre>
ostream& operator << (ostream& os, const pair< F, pre>& p) {
	return os<<"(" <<p.first<<", "<<p.second<<")"; }

typedef pair<int, int> ii;

template<typename T> using min_pq =
	std::priority_queue<T, vector<T>, greater<T> >;

//int dx[] = {-1, +0, +1, +0};
//int dy[] = {+0, +1, +0, -1};

const int maxn = 102;

int pre[maxn][maxn];
int countmy(int r1, int c1, int r2, int c2) {
	return pre[r2][c2] - pre[r2][c1-1] - pre[r1-1][c2] + pre[r1-1][c1-1];
}

void findTreasure (int N) {
	vector<ii> v;
	for(int i = 1; i <= N; i++) {
		for(int j = 1; j <= N; j++) {
			pre[i][j] = countTreasure(1, 1, i, j);
		}
	}
	for(int i = 1; i <= N; i++) {
		for(int j = 1; j <= N; j++) {
			if(countmy(i, j, i, j)) {
				v.emplace_back(i, j);
			}
		}
	}
	for(ii &b : v) {
		Report(b.first, b.second);
	}
}

Compilation message (stderr)

treasure.cpp: In function 'int myrand(int, int)':
treasure.cpp:20:2: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
  if(ret < 0) ret = -ret; ret %= (r-l+1); ret += l;
  ^~
treasure.cpp:20:26: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
  if(ret < 0) ret = -ret; ret %= (r-l+1); ret += l;
                          ^~~

• Subtask 1: 44 / 100