Submission #1079088

#	Time	Username	Problem	Language	Result	Execution time	Memory
1079088		anton	Tiles (BOI24_tiles)	C++17	0 / 100	59 ms	6848 KiB

Main

    #include<bits/stdc++.h>
     
    using namespace std;
    #define int long long
    #define pt complex<int>
    #define pii pair<int, int>
    int N, M;
    vector<pt> points; 
    signed main(){
        cin>>N>>M;
     
        vector<vector<int>> col_range(M);
        for(int i = 0; i<N; i++){
            int a, b;
            cin>>a>>b;
            points.push_back({a, b});
        }
     
        pt prev= points.back();
        for(int i = 0; i<N; i++){
            pt edge = points[i]-prev;
     
            if(edge.imag() == 0){
                pii range = {min(points[i].real(), prev.real()), max(points[i].real(), prev.real())};
                for(int j = range.first; j<range.second; j++){
                    col_range[j].push_back(points[i].imag());
                }
            }
            prev=  points[i];
        }
     
        for(int i = 0; i<M; i++){
            sort(col_range[i].begin(), col_range[i].end());
        }
     
        int k =-1;
        bool ok = true;
        while(ok && k<=M-3){
     
            for(int i = 0; i<col_range[k+1].size(); i+=2){
                if((col_range[k+1][i+1]-col_range[k+1][i])%2 != 0){
                    ok = false;
                }
            }
            if(col_range[k+1].size() != col_range[k+2].size()){
                ok  = false;
            }
            else{
                for(int i = 0; i<col_range[k+1].size(); i++){
                    if(col_range[k+1][i] != col_range[k+2][i]){
                        ok = false;
                    }
                }
            }
            if(ok){
                k+=2;
            }
        }
        cout<<k+1<<endl;
    }

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:40:29: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   40 |             for(int i = 0; i<col_range[k+1].size(); i+=2){
      |                            ~^~~~~~~~~~~~~~~~~~~~~~
Main.cpp:49:33: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   49 |                 for(int i = 0; i<col_range[k+1].size(); i++){
      |                                ~^~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 4
• Subtask 2: 0 / 9
• Subtask 3: 0 / 11
• Subtask 4: 0 / 19
• Subtask 5: 0 / 22
• Subtask 6: 0 / 25
• Subtask 7: 0 / 10