제출 #673323

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
673323		Baytoro	Red-blue table (IZhO19_stones)	C++17	27 / 100	23 ms	1408 KiB

stones

#include <bits/stdc++.h>
using namespace std;
#define ios ios::sync_with_stdio(false); cin.tie(NULL);
#define pb push_back
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define fr first
#define sc second
#define int long long
#define endl '\n'
#define cnt(x) __builtin_popcount(x)
void fopn(string name){
	freopen((name+".in").c_str(),"r",stdin);
	freopen((name+".out").c_str(),"w",stdout);
}
const int INF=1e18,mod=998244353;
int n,m;
char ar[1005][1005];
void solve(){
	cin>>n>>m;
	
	int ans=0,swaped=0;
	if(n>m){
		swap(n,m);
		swaped=1;
	}
	for(int i=1;i<=n;i++){
		for(int j=1;j<=m;j++){
			if(swaped)
				ar[i][j]='+';
			else
				ar[i][j]='-';
		}
			
	}
	cout<<m+(((n+1)/2-1)*m/(m/2+1))<<endl;
	for(int i=1;i<=(((n+1)/2-1)*m/(m/2+1));i++){
		for(int j=1;j<=m;j++){
			if(swaped)
				ar[i][j]='-';
			else
				ar[i][j]='+';
		}
	}
	if(!swaped)
		for(int i=1;i<=n;i++){
			for(int j=1;j<=m;j++)
				cout<<ar[i][j];
			cout<<endl;
		}
	else
		for(int i=1;i<=m;i++){
			for(int j=1;j<=n;j++)
				cout<<ar[j][i];
			cout<<endl;
		}
}
main(){
	//fopn("newbarn");
	ios;
	int T=1;
	cin>>T;
	while(T--){
		solve();
	}
}

컴파일 시 표준 에러 (stderr) 메시지

stones.cpp: In function 'void solve()':
stones.cpp:22:6: warning: unused variable 'ans' [-Wunused-variable]
   22 |  int ans=0,swaped=0;
      |      ^~~
stones.cpp: At global scope:
stones.cpp:58:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   58 | main(){
      | ^~~~
stones.cpp: In function 'void fopn(std::string)':
stones.cpp:13:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   13 |  freopen((name+".in").c_str(),"r",stdin);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
stones.cpp:14:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   14 |  freopen((name+".out").c_str(),"w",stdout);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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