Submission #44415

#TimeUTC-0UsernameProblemLanguageResultExecution timeMemory
444152018-04-02 04:31:52choikiwonPort Facility (JOI17_port_facility)C++17
100 / 100
4129 ms784892 KiB
#include<bits/stdc++.h>
using namespace std;
typedef pair<int, int> pii;
const int mod = 1e9 + 7;
const int MN = 1000010;
int N, M;
pii P[MN], arr[MN << 1];
vector<int> A, B;
struct BIT {
vector<pii> tree;
void init() {
tree = vector<pii>(4 * M);
build(0, M - 1, 1);
}
void build(int l, int r, int n) {
if(l == r) {
tree[n] = arr[l];
return;
}
int m = (l + r)>>1;
build(l, m, 2*n);
build(m + 1, r, 2*n + 1);
tree[n] = max(tree[2*n], tree[2*n + 1]);
}
void upd(int idx, pii val, int l, int r, int n) {
if(idx < l || r < idx) return;
 
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Compilation message (stderr)

port_facility.cpp: In function 'int main()':
port_facility.cpp:73:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &N);
     ~~~~~^~~~~~~~~~
port_facility.cpp:76:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d %d", &P[i].first, &P[i].second);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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