Submission #895003

#	Time	Username	Problem	Language	Result	Execution time	Memory
895003		tamyte	Bulldozer (JOI17_bulldozer)	C++14	5 / 100	1 ms	424 KiB

bulldozer

#include<bits/stdc++.h>
#define int int64_t
#define all(x) (x).begin(), (x).end()
#define UNIQUE(x) \
  sort(all(x)), x.erase(unique(all(x)), x.end()), x.shrink_to_fit()
using pii = std::pair<int, int>;
using namespace std;

void setIO(string name = "")
{
    cin.tie(0)->sync_with_stdio(0); // see /general/fast-io
    if (name.size())
    {
        freopen((name + ".in").c_str(), "r", stdin); // see /general/input-output
        freopen((name + ".out").c_str(), "w", stdout);
    }
}
int MOD = 1e9 + 7;
int oo = 1e18;



struct st
{
    int x, y, c;
};




void solve() {
    #define test1
    int n;
    cin >> n;
    vector<st> arr(n);
    for (int i = 0; i < n; ++i) {
        cin >> arr[i].x >> arr[i].y >> arr[i].c;
    }
    sort(arr.begin(), arr.end(), [&](const st& a, const st& b) {
        return a.x < b.x;
    });
    int mx = 0, curr = 0;
    for (int i = 0; i < n; ++i) {
        // cout << arr[i].c << " -> ";
        curr = max((int)0, curr + arr[i].c);
        mx = max(mx, curr);
        // cout << curr << " -> ";
    }
    // cout << "\n";
    // cout << mx << " ";
    // sort(arr.begin(), arr.end(), [&](const st& a, const st& b) {
    //     return a.y < b.y;
    // });
    // curr = 0;
    // for (int i = 0; i < n; ++i) {
    //     curr = max((int)0, curr + arr[i].c);
    //     mx = max(mx, curr);
    // }
    cout << mx;
} 




int32_t main () {
    setIO(""); int t = 1;
    #ifdef test
    cin >> t;
    #endif
    while (t--) solve();
}

Compilation message (stderr)

bulldozer.cpp: In function 'void setIO(std::string)':
bulldozer.cpp:14:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   14 |         freopen((name + ".in").c_str(), "r", stdin); // see /general/input-output
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
bulldozer.cpp:15:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   15 |         freopen((name + ".out").c_str(), "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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