Submission #135336

#	Time	Username	Problem	Language	Result	Execution time	Memory
135336		Just_Solve_The_Problem	Bulldozer (JOI17_bulldozer)	C++11	5 / 100	2 ms	376 KiB

bulldozer

#include <bits/stdc++.h>

#define ll long long

using namespace std;

const int N = (int)2e3 + 7;

int a[N];
int x[N], y[N], w[N], pos[N];
int n;
ll pref[N];

main() {
  scanf("%d", &n);
  iota(pos, pos + n, 0);
  for (int i = 0; i < n; i++) {
    scanf("%d %d %d", &x[i], &y[i], &w[i]);
  }
  sort(pos, pos + n, [&](const int &A, const int &B){
    return x[A] < x[B];
  });
  ll mn = 0, ans = 0;
  for (int i = 0; i < n; i++) {
    if (i) pref[i] = pref[i - 1];
    pref[i] += w[pos[i]];
    ans = max((pref[i] - mn), ans);
    mn = min(mn, pref[i]);
  }
  cout << ans;
}

Compilation message (stderr)

bulldozer.cpp:14:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main() {
      ^
bulldozer.cpp: In function 'int main()':
bulldozer.cpp:15:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &n);
   ~~~~~^~~~~~~~~~
bulldozer.cpp:18:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d %d", &x[i], &y[i], &w[i]);
     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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