Submission #338465

#	Time	Username	Problem	Language	Result	Execution time	Memory
338465		theshadow_04	Bulldozer (JOI17_bulldozer)	C++11	0 / 100	1 ms	364 KiB

bulldozer

// V T An
#include <bits/stdc++.h>
#define Task "BULLDOZER"

using namespace std;

const int maxn = 2005;

int n;
struct data {
    int x, y, w;

    bool operator < (const data A) {
        return x < A.x;
    }
} point[maxn];

long long s[maxn], ans = 0;

int main() {
    ios_base::sync_with_stdio(0);
    cout.tie(0); cin.tie(0);
	if(fopen(Task".inp", "r")){
		freopen(Task".inp", "r", stdin);
		freopen(Task".out", "w", stdout);
	}
    cin >> n;
    for(int i = 1; i <= n; ++ i) {
        int x, y, w;
        cin >> x >> y >> w;
        point[i] = {x, y, w};
    }
    sort(point + 1, point + n + 1);
    for(int i = 1; i <= n; ++ i) {
        s[i] = s[i - 1] + point[i].w;
    }
    for(int i = 1; i <= n; ++ i) {
        for(int j = i + 1; j <= n; ++ j) {
            ans = max(ans, s[j] - s[i - 1]);
        }
    }
    cout << ans << "\n";
}

// CHY-AKAV

Compilation message (stderr)

bulldozer.cpp: In function 'int main()':
bulldozer.cpp:24:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   24 |   freopen(Task".inp", "r", stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
bulldozer.cpp:25:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   25 |   freopen(Task".out", "w", stdout);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 5
• Subtask 2: 0 / 20
• Subtask 3: 0 / 35
• Subtask 4: 0 / 20
• Subtask 5: 0 / 20