Submission #1002760

#	Time	Username	Problem	Language	Result	Execution time	Memory
1002760		Deepesson	Mađioničar (COI22_madionicar)	C++17	0 / 100	80 ms	60224 KiB

Main

#include <bits/stdc++.h>
typedef std::pair<int,int> pii;
int main()
{
    int n;
    std::cin>>n;
    int oldn=n;
    int truenum=2;
    while(truenum<n){
        truenum*=2;
    }
    n=truenum;
    std::vector<std::vector<pii>> ans;
    for (int k = 2; k <= n; k *= 2){ // k is doubled every iteration
        for (int j = k/2; j > 0; j /= 2){ // j is halved at every iteration, with truncation of fractional parts
            std::vector<pii> tp;
            for (int i = 0; i < n; i++){
                int l = i ^ j;
                if (l > i)
                    if ( (i&k == 0)){
                        if(std::max(l+1,i+1)<=oldn)
                            tp.push_back({l+1,i+1});
                    }else {
                        if(std::max(l+1,i+1)<=oldn)
                            tp.push_back({i+1,l+1});
                    }
            }
            if(tp.size()){
                ans.push_back(tp);
            }
        }
    }
    std::cout<<ans.size()<<"\n";
    for(auto&x:ans){
        for(int v=0;v!=x.size();++v)std::cout<<"CMPSWP R"<<x[v].first<<" R"<<x[v].second<<((v==(x.size()-1))?"\n":" ");
    }
}

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:20:31: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses]
   20 |                     if ( (i&k == 0)){
      |                             ~~^~~~
Main.cpp:19:20: warning: suggest explicit braces to avoid ambiguous 'else' [-Wdangling-else]
   19 |                 if (l > i)
      |                    ^
Main.cpp:35:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   35 |         for(int v=0;v!=x.size();++v)std::cout<<"CMPSWP R"<<x[v].first<<" R"<<x[v].second<<((v==(x.size()-1))?"\n":" ");
      |                     ~^~~~~~~~~~
Main.cpp:35:94: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   35 |         for(int v=0;v!=x.size();++v)std::cout<<"CMPSWP R"<<x[v].first<<" R"<<x[v].second<<((v==(x.size()-1))?"\n":" ");
      |                                                                                             ~^~~~~~~~~~~~~~

• Subtask 1: 0 / 13
• Subtask 2: 0 / 25
• Subtask 3: 0 / 25
• Subtask 4: 0 / 37