Submission #380951

#	Time	Username	Problem	Language	Result	Execution time	Memory
380951		Iwanttobreakfree	Finding Routers (IOI20_routers)	C++17	72.37 / 100	3 ms	504 KiB

routers

#include "routers.h"
#include <vector>
using namespace std;

vector<int> find_routers(int lon, int n, int q) {
    vector<int> ans(n);
    ans[0]=0;
    int l=0,r;
    for(int i=0;i<n-1;i++){
    r=lon;
    int sol;
    while(l<=r){
    	int mid=(r-l)/2+l;
    	int cerc=use_detector(mid);
    	if(cerc<i+1){
    		l=mid+1;
    		sol=mid;
		}
		else{
			r=mid-1;
		}
	}
	ans[i+1]=2*sol-ans[i];
	l=sol;
	}
	return ans;
}

Compilation message (stderr)

routers.cpp: In function 'std::vector<int> find_routers(int, int, int)':
routers.cpp:23:12: warning: 'sol' may be used uninitialized in this function [-Wmaybe-uninitialized]
   23 |  ans[i+1]=2*sol-ans[i];
      |           ~^~~~

• Subtask 1: 16 / 16
• Subtask 2: 21 / 21
• Subtask 3: 23 / 23
• Subtask 4: 12.3712 / 40