Submission #656391

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
656391	2022-11-07 09:02:28	HaYoungJoon	Building Bridges (CEOI17_building)	C++14	0 / 100	2 ms	340 KiB

building

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#include <bits/stdc++.h>
#define ll long long
using namespace std;
const ll INF = 1e18;
const int maxV = 1e6 + 1;
int n;
struct line {
    ll A,B;
};
ll getVal(line X, ll y) {
    return X.A*y + X.B;
}
line t[4*maxV];
void update(int v, int tl, int tr, line X) {
    if (tl == tr) {
        if (getVal(X,tl) < getVal(t[v],tl)) t[v] = X;
        return;
    }
    int tm = (tl + tr)/2;
    if (t[v].A < X.A) swap(t[v],X);
    if (getVal(t[v],tm) > getVal(X,tm)) {
        swap(t[v],X);
        update(2*v,tl,tm,X);
    } else {
 
 
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Compilation message (stderr)

building.cpp: In function 'int main()':
building.cpp:59:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   59 |     freopen("XayCau.INP","r",stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
building.cpp:60:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   60 |     freopen("XayCau.OUT","w",stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 30
• Subtask 2: 0 / 30
• Subtask 3: 0 / 40