Submission #232784

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
232784	2020-05-18 06:08:27	Mercenary	Street Lamps (APIO19_street_lamps)	C++14	100 / 100	1391 ms	70532 KiB

street_lamps

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#include<bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/trie_policy.hpp>
#define pb push_back
#define mp make_pair
#define taskname "A"
using namespace std;
using namespace __gnu_pbds;
typedef long long ll;
typedef long double ld;
typedef pair<int,int> ii;
typedef tree <int,null_type,less<int>,rb_tree_tag,tree_order_statistics_node_update> ordered_set;
const int maxn = 3e5 + 5;
const int logn = log2(maxn) + 1;
struct BIT{
    vector<int> val, bit;
    BIT(){val.clear();bit.clear();}
    void init(){
        sort(val.begin(),val.end());
        val.erase(unique(val.begin(),val.end()),val.end());
        bit.resize(val.size() , 0);
    }
    void update(int x , int delta){
        for( ; x <= val.size() ; x += x & -x){
            bit[x - 1] += delta;
 
 
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Compilation message (stderr)

street_lamps.cpp: In member function 'void BIT::update(int, int)':
street_lamps.cpp:29:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for( ; x <= val.size() ; x += x & -x){
                ~~^~~~~~~~~~~~~
street_lamps.cpp: In function 'int main()':
street_lamps.cpp:79:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   freopen(taskname".INP", "r",stdin);
   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
street_lamps.cpp:80:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   freopen(taskname".OUT", "w",stdout);
   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~

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