Submission #308760

#	Time	Username	Problem	Language	Result	Execution time	Memory
308760		shrek12357	Go (COCI18_go)	C++14	90 / 100	1 ms	256 KiB

go

#include <iostream>
#include <vector>
#include <algorithm>
#include <string>
#include <map>
#include <set>
#include <climits>
#include <cmath>
#include <fstream>
#include <queue>
#include <stack>
using namespace std;
#define ll long long
//cin.tie(0);
//ios_base::sync_with_stdio(0);



struct p {
	int room;
	int candy;
	int time;
};

bool comp(p a, p b) {
	return a.room < b.room;
}

int n, d, m;
vector<p> nums;

int LCalc(int i, int j, int idx) {
	int tot = 0;
	int LTime = d - nums[i].room;
	for (int k = idx; k >= i; k--) {
		int t = (d - nums[k].room);
		if (nums[k].time > t) {
			tot += nums[k].candy;
		}
	}
	for (int k = idx; k <= j; k++) {
		int t = 2*LTime - 1 + nums[k].room - d;
		if (nums[k].time > t) {
			tot += nums[k].candy;
		}
	}
	return tot;
}

int RCalc(int i, int j, int idx) {
	int tot = 0;
	int RTime = nums[j].room - d;
	for (int k = idx; k <= j; k++) {
		int t = (nums[k].room - d);
		if (nums[k].time > t) {
			tot += nums[k].candy;
		}
	}
	for (int k = idx; k >= i; k--) {
		int t = 2*RTime - 1 + d - nums[k].room;
		if (nums[k].time > t) {
			tot += nums[k].candy;
		}
	}
	return tot;
}

int main() {

	cin >> n >> d >> m;
	nums.push_back({ d, 0, 0 });
	for (int i = 0; i < m; i++) {
		int a, b, c;
		cin >> a >> b >> c;
		nums.push_back({ a, b, c });
	}
	m++;
	sort(nums.begin(), nums.end(), comp);
	int idx = 0;
	p c = { d, 0, 0 };
	for (int i = 0; i < m; i++) {
		if (nums[i].room == d && nums[i].candy == 0) {
			idx = i;
		}
	}
	int best = 0;
	for (int i = idx; i >= 0; i--) {
		for (int j = idx; j < m; j++) {
			int totL = 0, totR = 0;
			int LTime = d - nums[i].room, RTime = nums[j].room - d;
			best = max(LCalc(i, j, idx), best);
			best = max(RCalc(i, j, idx), best);
		}
	}
	cout << best << endl;
}

Compilation message (stderr)

go.cpp: In function 'int main()':
go.cpp:90:8: warning: unused variable 'totL' [-Wunused-variable]
   90 |    int totL = 0, totR = 0;
      |        ^~~~
go.cpp:90:18: warning: unused variable 'totR' [-Wunused-variable]
   90 |    int totL = 0, totR = 0;
      |                  ^~~~
go.cpp:91:8: warning: unused variable 'LTime' [-Wunused-variable]
   91 |    int LTime = d - nums[i].room, RTime = nums[j].room - d;
      |        ^~~~~
go.cpp:91:34: warning: unused variable 'RTime' [-Wunused-variable]
   91 |    int LTime = d - nums[i].room, RTime = nums[j].room - d;
      |                                  ^~~~~
go.cpp:81:4: warning: unused variable 'c' [-Wunused-variable]
   81 |  p c = { d, 0, 0 };
      |    ^

• Subtask 1: 90 / 100