제출 #93947

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
93947		ahmedie404	Pohlepko (COCI16_pohlepko)	C++14	40 / 80	1068 ms	66560 KiB

pohlepko

#include <iostream>

using namespace std;
int n, m;
string a[2000+9];
bool vis[2000+9][2000+9];

bool check(int i, int j){
    return i >= 0 && j >= 0 && i < n && j < m;
}

string finds(int i, int j, string s){

    char l='z';
    int x,y;

    s += a[i][j];

    if( i == n-1 && j == m-1 )
        return s;

    if(check(i+1, j) && a[i+1][j] <= l){
        l = a[i+1][j];
        x=i+1, y=j;
    }

    if(check(i, j+1) && a[i][j+1] < l){
        l = a[i][j+1];
        x=i, y=j+1;
    }

    if(a[i+1][j] == a[i][j+1]){
        int a, b;
        string s1;
        if(!vis[i+1][j]){
            s1 = finds(i+1, j, s);
            a=i+1, b=j;
        }

        if(!vis[i][j+1]){
            if(string(finds(i, j+1, s)) < string(s1)){
                s1 = finds(i, j+1, s);
                a=i, b=j+1;
            }
        }

        if(check(a,b)){
            vis[a][b]=true;
            return s1;
        }
    }

    vis[x][y]=true;

    return finds(x, y, s);

}

int main(){
    cin >> n >> m;
    for(int i=0;i<n;i++) cin >> a[i];

    cout << finds(0, 0, "") << endl;

    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

pohlepko.cpp: In function 'std::__cxx11::string finds(int, int, std::__cxx11::string)':
pohlepko.cpp:33:16: warning: 'b' may be used uninitialized in this function [-Wmaybe-uninitialized]
         int a, b;
                ^
pohlepko.cpp:33:13: warning: 'a' may be used uninitialized in this function [-Wmaybe-uninitialized]
         int a, b;
             ^
pohlepko.cpp:55:25: warning: 'y' may be used uninitialized in this function [-Wmaybe-uninitialized]
     return finds(x, y, s);
                         ^
pohlepko.cpp:55:25: warning: 'x' may be used uninitialized in this function [-Wmaybe-uninitialized]

• Subtask 1: 40 / 80