提出 #52655878

---

ソースコード 拡げる

#include <bits/stdc++.h>
using namespace std;

struct Point{
    int i,j;
    auto operator<=>(const Point&)const=default;
};

int main(){
    int n,m;
    cin>>n>>m;
    set<Point> ps;
    set<int> rs,cs;
    for(int i=0;i<m;i++){
        Point p;
        cin>>p.i>>p.j;
        ps.insert(p);
        rs.insert(p.i);
        cs.insert(p.j);
    }
    vector<int> nrs,ncs;
    for(int i=1;i<=n;i++)
        if (rs.contains(i))
            continue;
        else if(rs.size()==m)
            nrs.push_back(i);
        else
            rs.insert(i);
    for(int j=1;j<=n;j++)
        if(cs.contains(j))
            continue;
        else if(cs.size()==m)
            ncs.push_back(j);
        else 
            cs.insert(j);
    vector<Point> ans;
    for(int i:rs)
        for(int j:cs)
            ans.emplace_back(i,j);
    for(int k=0;k<nrs.size();k++)
        for(int l=0;l<m;l++)
            ans.emplace_back(nrs[k],ncs[(k+l)%ncs.size()]);
    cout<<ans.size()<<'\n';
    for(auto &p:ans)
        cout<<p.i<<' '<<p.j<<'\n';
}

提出情報

コンパイルエラー

Main.cpp: In function ‘int main()’:
Main.cpp:25:26: warning: comparison of integer expressions of different signedness: ‘std::set<int>::size_type’ {aka ‘long unsigned int’} and ‘int’ [-Wsign-compare]
   25 |         else if(rs.size()==m)
      |                 ~~~~~~~~~^~~
Main.cpp:32:26: warning: comparison of integer expressions of different signedness: ‘std::set<int>::size_type’ {aka ‘long unsigned int’} and ‘int’ [-Wsign-compare]
   32 |         else if(cs.size()==m)
      |                 ~~~~~~~~~^~~
Main.cpp:40:18: warning: comparison of integer expressions of different signedness: ‘int’ and ‘std::vector<int>::size_type’ {aka ‘long unsigned int’} [-Wsign-compare]
   40 |     for(int k=0;k<nrs.size();k++)
      |                 ~^~~~~~~~~~~

ジャッジ結果