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Submission #25618

# Submission time Handle Problem Language Result Execution time Memory
25618 2017-06-23T08:28:49 Z Extazy Board (CEOI13_board) C++14
60 / 100
 200 ms 2416 KB 
#include <bits/stdc++.h>

using namespace std;

const int N = 1<<17;

string add(string a, string b) {
    string c,d;
    int p=0,t,i;

    reverse(a.begin(),a.end());
    reverse(b.begin(),b.end());
    
    while(a.size()<b.size()) a.push_back('0');
    while(a.size()>b.size()) b.push_back('0');

    for(i=0;i<(int)(a.size());i++) {
        t=p+a[i]-'0'+b[i]-'0';
        p=t/10;
        t%=10;
        c.push_back(t+'0');
    }
    if(p>0) c.push_back(p+'0');

    reverse(c.begin(),c.end());
    for(i=0;i<(int)(c.size());i++) if(c[i]!='0') break;
    for(;i<(int)(c.size());i++) d.push_back(c[i]);
    if(d.empty()) d="0";
    
    return d;
}

bool cmp(string a, string b) {
    if(a.size()<b.size()) return true;
    if(a.size()>b.size()) return false;
    for(int i=0;i<(int)(a.size());i++) {
        if(a[i]<b[i]) return true;
        if(a[i]>b[i]) return false;
    }
    return false;
}

string get_min(string a, string b) {
    return ((cmp(a,b)==true) ? a : b);
}

string get_max(string a, string b) {
    return ((cmp(a,b)==true) ? b : a);
}

string subtract(string a, string b) {
    string c,d;
    int i,j;

    reverse(a.begin(),a.end());
    reverse(b.begin(),b.end());
    
    while(a.size()>b.size()) b.push_back('0');

    for(i=0;i<(int)(a.size());i++) {
        if(a[i]>=b[i]) {
            c.push_back(a[i]-b[i]+'0');
            continue;
        }
        for(j=i+1;j<(int)(a.size());j++) {
            if(a[j]>0) {
                --a[j];
                break;
            }
            else {
                a[j]='9';
            }
        }
        c.push_back(a[i]+10-b[i]+'0');
    }

    reverse(c.begin(),c.end());
    for(i=0;i<(int)(c.size());i++) if(c[i]!='0') break;
    for(;i<(int)(c.size());i++) d.push_back(c[i]);
    if(d.empty()) d="0";

    return d;
}

string div2(string a) {
    int i,p=0;
    string b,c;
    for(i=0;i<(int)(a.size());i++) {
        p*=10;
        p+=a[i]-'0';
        b.push_back(p/2+'0');
        p%=2;
    }
    for(i=0;i<(int)(b.size());i++) if(b[i]!='0') break;
    for(;i<(int)(b.size());i++) c.push_back(b[i]);
    if(c.empty()) c="0";

    return c;
}

struct node {
    int level;
    string number;

    node() {
        level=0;
        number="1";
    }

    void move(char a) {
        if(a=='1') {
            ++level;
            number=add(number,number);
        }
        else if(a=='2') {
            ++level;
            number=add(add(number,number),"1");
        }
        else if(a=='L') {
            number=subtract(number,"1");
        }
        else if(a=='R') {
            number=add(number,"1");
        }
        else { //a=='U'
            --level;
            number=div2(number);
        }
    }
};

char a[N],b[N];
int n,m;
node node1,node2;
string ans,curr;

int main() {
    int i;

    scanf("%s", a+1);
    n=strlen(a+1);
    scanf("%s", b+1);
    m=strlen(b+1);
    
    for(i=1;i<=n;i++) {
        node1.move(a[i]);
    }
    
    for(i=1;i<=m;i++) {
        node2.move(b[i]);
    }

    //ans=node1.level+node2.level;
    //if(node1.level>=1 && node2.level>=1) ans=min(ans,node1.level+node2.level-1ll);

    curr="0";
    while(node1.level!=node2.level) {
        if(node1.level>node2.level) curr=add(curr,"1"),node1.move('U');
        else curr=add(curr,"1"),node2.move('U');
    }
    ans=add(curr,subtract(get_max(node1.number,node2.number),get_min(node1.number,node2.number)));

    while(node1.level>0) {
        curr=add(curr,"2");
        node1.move('U');
        node2.move('U');
        ans=get_min(ans,add(curr,subtract(get_max(node1.number,node2.number),get_min(node1.number,node2.number))));
    }

    printf("%s\n", ans.c_str());

    return 0;
}

Compilation message

board.cpp: In function 'int main()':
board.cpp:140:21: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%s", a+1);
                     ^
board.cpp:142:21: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%s", b+1);
                     ^

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2284 KB Output is correct
2 Correct 0 ms 2284 KB Output is correct
3 Correct 0 ms 2284 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 2284 KB Output is correct
2 Correct 3 ms 2284 KB Output is correct
3 Correct 16 ms 2284 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2284 KB Output is correct
2 Correct 0 ms 2284 KB Output is correct
3 Correct 0 ms 2284 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 2284 KB Output is correct
2 Correct 63 ms 2284 KB Output is correct
3 Correct 36 ms 2284 KB Output is correct
4 Correct 0 ms 2284 KB Output is correct
5 Correct 0 ms 2284 KB Output is correct

Subtask #5
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2284 KB Output is correct
2 Correct 0 ms 2284 KB Output is correct
3 Correct 0 ms 2284 KB Output is correct
4 Correct 0 ms 2284 KB Output is correct
5 Correct 0 ms 2284 KB Output is correct

Subtask #6
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 43 ms 2284 KB Output is correct
2 Correct 69 ms 2284 KB Output is correct
3 Correct 0 ms 2284 KB Output is correct
4 Correct 0 ms 2284 KB Output is correct

Subtask #7
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 200 ms 2284 KB Execution timed out
2 Halted 0 ms 0 KB -

Subtask #8
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 200 ms 2416 KB Execution timed out
2 Halted 0 ms 0 KB -

Subtask #9
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 200 ms 2416 KB Execution timed out
2 Halted 0 ms 0 KB -

Subtask #10
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 200 ms 2416 KB Execution timed out
2 Halted 0 ms 0 KB -