Submission #683295

#	Time	Username	Problem	Language	Result	Execution time	Memory
683295		FatihSolak	Red-blue table (IZhO19_stones)	C++17	0 / 100	87 ms	2432 KiB

stones

#include <bits/stdc++.h>
#define N 1005
using namespace std;
char ans[N][N];
void solve(){
    int a,b;
    cin >> a >> b;
    if(a <= b){
        for(int i = 0;i<a;i++){
            for(int j = 0;j<b;j++){
                ans[i][j] = '-';
            }
        }
        int num = a - (a/2 + 1);
        int res = b;
        set<pair<int,int>> s;
        for(int i = 0;i<a;i++){
            s.insert({b/2 + 1,i});
        }
        for(int i = 0;i<b && s.size();i++){
            vector<pair<int,int>> use;
            while(s.size() && use.size() < num){
                use.push_back(*s.begin());
                s.erase(s.begin());
            }
            for(auto u:use){
                u.first--;
                ans[u.second][i] = '+';
                if(u.first)
                    s.insert(u);
                else res++;
            }
        }
        cout << res << '\n';
        for(int i = 0;i<a;i++){
            for(int j = 0;j<b;j++){
                cout << ans[i][j] << ' ';
            }
            cout << '\n';
        }
    }
    else{
        for(int i = 0;i<a;i++){
            for(int j = 0;j<b;j++){
                ans[i][j] = '+';
            }
        }
        int num = b - (b/2 + 1);
        int res = a;
        set<pair<int,int>> s;
        for(int i = 0;i<b;i++){
            s.insert({a/2 + 1,i});
        }
        for(int i = 0;i<a && s.size();i++){
            vector<pair<int,int>> use;
            while(s.size() && use.size() < num){
                use.push_back(*s.begin());
                s.erase(s.begin());
            }
            for(auto u:use){
                u.first--;
                ans[i][u.second] = '-';
                if(u.first)
                    s.insert(u);
                else res++;
            }
        }
        cout << res << '\n';
        for(int i = 0;i<a;i++){
            for(int j = 0;j<b;j++){
                cout << ans[i][j] << ' ';
            }
            cout << '\n';
        }
    }
}

int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    #ifdef Local
    freopen("in.txt","r",stdin);
    freopen("out.txt","w",stdout);
    #endif
    int t=1;
    cin>>t;
    while(t--){
        solve();
    }
    #ifdef Local
    cout<<endl<<fixed<<setprecision(2)<<1000.0 * clock() / CLOCKS_PER_SEC<< " milliseconds ";
    #endif
}

Compilation message (stderr)

stones.cpp: In function 'void solve()':
stones.cpp:22:42: warning: comparison of integer expressions of different signedness: 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   22 |             while(s.size() && use.size() < num){
      |                               ~~~~~~~~~~~^~~~~
stones.cpp:56:42: warning: comparison of integer expressions of different signedness: 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   56 |             while(s.size() && use.size() < num){
      |                               ~~~~~~~~~~~^~~~~

• Subtask 1: 0 / 17
• Subtask 2: 0 / 10
• Subtask 3: 0 / 16
• Subtask 4: 0 / 11
• Subtask 5: 0 / 15
• Subtask 6: 0 / 31