oj.uz

답안 #791951

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
791951 2023-07-24T13:00:21 Z Amylopectin Star Trek (CEOI20_startrek) C++14
23 / 100
 1000 ms 59648 KB 
#include <stdio.h>
#include <iostream>
#include <vector>
#include <algorithm>
#include <set>
#include <stdlib.h>
// #pragma GCC optimize("O3,unroll-loops")
using namespace std;
const long long mxn = 1e6 + 10,mo = 1e9 + 7;
struct we
{
    long long to,val[2][2],cur[2],num,ft;
    we()
    {
        to = 0;
        val[0][0] = -1;
        val[0][1] = -1;
        val[1][0] = -1;
        val[1][1] = -1;
        cur[0] = -1;
        cur[1] = -1;
        num = 0;
        ft = -1;
    }
    we(long long cn,long long cnu,long long cft)
    {
        to = cn;
        val[0][0] = -1;
        val[0][1] = -1;
        val[1][0] = -1;
        val[1][1] = -1;
        cur[0] = -1;
        cur[1] = -1;
        num = cnu;
        ft = cft;
    }
};

vector<struct we> pat[mxn] = {};
long long pid[mxn][2] = {},rwol,stt[mxn][2][3] = {},cou = 0,u[mxn] = {};
long long re(long long cn,long long cidx,long long be,long long wh)
{
    long long i,j,fn,fm,csi,ccur = -1,cva0 = 0,fidx,wop = (wh+1)&1,fcur,fva0,cva1 = 0,fva1;
    if(cidx != -1)
    {
        if(pat[cn][cidx].cur[wh] != -1)
        {
            return 0;
        }
    }
    // if(u[cn] == 1)
    // {
    //     i = i;
    //     exit(1);
    // }
    u[cn] = 1;
    csi = pat[cn].size();
    for(i=0; i<csi; i++)
    {
        fn = pat[cn][i].to;

        if(i == cidx || fn == be)
        {
            continue;
        }
        fidx = pid[pat[cn][i].num][(pat[cn][i].ft + 1)&1];
        if(fidx == -1)
        {
            exit(1);
        }
        re(fn,fidx,cn,wop);
        fcur = pat[fn][fidx].cur[wop];
        fva0 = pat[fn][fidx].val[wop][0];
        fva1 = pat[fn][fidx].val[wop][1];
        if(wh == 0)
        {
            if(ccur == -1)
            {
                ccur = fcur;
                if(ccur < 2)
                {
                    cva0 = fva0;
                    cva1 = fva1;
                }
            }
            else 
            {
                if(fcur == 0)
                {
                    if(ccur != 0)
                    {
                        cva0 = fva0;
                        cva1 = 0;
                    }
                    else
                    {
                        cva0 = 0;
                    }
                    ccur = 0;
                    
                }
                else if(fcur == 1)
                {
                    if(ccur == 0)
                    {
                        // cva0 += fva0;
                        // cva += fva;
                    }
                    else if(ccur == 1)
                    {
                        cva1 += fva1;
                        cva0 = 0;
                    }
                    else 
                    {
                        ccur = 1;
                        cva1 += fva1;
                        cva0 = 0;
                    }
                }
            }
        }
        else 
        {
            if(ccur == -1)
            {
                ccur = fcur;
                if(ccur == 2)
                {
                    ccur = 1;
                }
                // if(ccur < 2)
                // {
                    // cva = fva;
                cva0 = fva0;
                cva1 = fva1;
                // }
            }
            else 
            {
                if(ccur == 0)
                {
                    if(fcur == 0)
                    {
                        cva0 += fva0;
                    }
                    else if(fcur == 1)
                    {
                        ccur = 1;
                        cva0 = fva0;
                        cva1 = fva1;
                    }
                    else 
                    {
                        cva0 = fva0;
                        cva1 = fva1;
                        ccur = 1;
                    }
                }
                else if(ccur == 1)
                {
                    if(fcur >= 1)
                    {
                        cva0 = 0;
                        cva1 = 0;
                        ccur = 2;
                    }
                }
            }
        }
    }
    if(wh == 0)
    {
        if(ccur == -1)
        {
            ccur = 1;
            cva1 = 1;
            cva0 = 0;
        }
        else if(ccur == 0)
        {
            // cva ++;
        }
        else if(ccur >= 1)
        {
            ccur = 1;
            cva1 ++;
        }
    }
    else 
    {
        if(ccur == -1)
        {
            ccur = 0;
            cva0 = 1;
        }
        else if(ccur == 0)
        {
            cva0 ++;
        }
    }
    if(cidx == -1)
    {
        stt[cn][wh][0] = cva0;
        stt[cn][wh][1] = cva1;
        stt[cn][wh][2] = ccur;
    }
    else 
    {
        if(ccur == -1)
        {
            exit(1);
        }
        pat[cn][cidx].cur[wh] = ccur;
        pat[cn][cidx].val[wh][0] = cva0;
        pat[cn][cidx].val[wh][1] = cva1;
    }
    cou ++;
    u[cn] = 0;
    if(cou > 600000)
    {
        exit(1);
    }
    return 0;
}
int main()
{
    // freopen("input19.txt","r",stdin);
    long long i,j,n,m,cn,cm,fn,fm,cl,cr,su,cen,cva0,cva1,ccur,uw,ans;
    scanf("%lld %lld",&n,&m);
    for(i=1; i<n; i++)
    {
        scanf("%lld %lld",&cn,&cm);
        pid[i][0] = pat[cn].size();
        pid[i][1] = pat[cm].size();
        pat[cn].emplace_back(cm,i,0);
        pat[cm].emplace_back(cn,i,1);
        // pat[cn].push_back({cm,{{-1,-1},{-1,-1}},{-1,-1},i,0});
        // pat[cm].push_back({cn,{{-1,-1},{-1,-1}},{-1,-1},i,1});
    }
    uw = 0;
    cva0 = 0;
    cva1 = 0;
    for(i=1; i<=n; i++)
    {
        re(i,-1,-1,0);
        re(i,-1,-1,1);
        if(stt[i][0][2] == 0)
        {
            cva0 ++;
        }
        if(stt[i][1][2] == 0)
        {
            cva1 ++;
        }
    }
    ans = 0;
    if(stt[1][0][2] == 0)
    {
        ans = ((n - stt[1][0][0] - stt[1][0][1]) * n) % mo;
    }
    ans += stt[1][0][0] * cva0 + stt[1][0][1] * cva1;
    ans %= mo;
    printf("%lld\n",ans);
    return 0;
}

Compilation message

startrek.cpp: In function 'long long int re(long long int, long long int, long long int, long long int)':
startrek.cpp:43:17: warning: unused variable 'j' [-Wunused-variable]
   43 |     long long i,j,fn,fm,csi,ccur = -1,cva0 = 0,fidx,wop = (wh+1)&1,fcur,fva0,cva1 = 0,fva1;
      |                 ^
startrek.cpp:43:22: warning: unused variable 'fm' [-Wunused-variable]
   43 |     long long i,j,fn,fm,csi,ccur = -1,cva0 = 0,fidx,wop = (wh+1)&1,fcur,fva0,cva1 = 0,fva1;
      |                      ^~
startrek.cpp: In function 'int main()':
startrek.cpp:229:17: warning: unused variable 'j' [-Wunused-variable]
  229 |     long long i,j,n,m,cn,cm,fn,fm,cl,cr,su,cen,cva0,cva1,ccur,uw,ans;
      |                 ^
startrek.cpp:229:29: warning: unused variable 'fn' [-Wunused-variable]
  229 |     long long i,j,n,m,cn,cm,fn,fm,cl,cr,su,cen,cva0,cva1,ccur,uw,ans;
      |                             ^~
startrek.cpp:229:32: warning: unused variable 'fm' [-Wunused-variable]
  229 |     long long i,j,n,m,cn,cm,fn,fm,cl,cr,su,cen,cva0,cva1,ccur,uw,ans;
      |                                ^~
startrek.cpp:229:35: warning: unused variable 'cl' [-Wunused-variable]
  229 |     long long i,j,n,m,cn,cm,fn,fm,cl,cr,su,cen,cva0,cva1,ccur,uw,ans;
      |                                   ^~
startrek.cpp:229:38: warning: unused variable 'cr' [-Wunused-variable]
  229 |     long long i,j,n,m,cn,cm,fn,fm,cl,cr,su,cen,cva0,cva1,ccur,uw,ans;
      |                                      ^~
startrek.cpp:229:41: warning: unused variable 'su' [-Wunused-variable]
  229 |     long long i,j,n,m,cn,cm,fn,fm,cl,cr,su,cen,cva0,cva1,ccur,uw,ans;
      |                                         ^~
startrek.cpp:229:44: warning: unused variable 'cen' [-Wunused-variable]
  229 |     long long i,j,n,m,cn,cm,fn,fm,cl,cr,su,cen,cva0,cva1,ccur,uw,ans;
      |                                            ^~~
startrek.cpp:229:58: warning: unused variable 'ccur' [-Wunused-variable]
  229 |     long long i,j,n,m,cn,cm,fn,fm,cl,cr,su,cen,cva0,cva1,ccur,uw,ans;
      |                                                          ^~~~
startrek.cpp:229:63: warning: variable 'uw' set but not used [-Wunused-but-set-variable]
  229 |     long long i,j,n,m,cn,cm,fn,fm,cl,cr,su,cen,cva0,cva1,ccur,uw,ans;
      |                                                               ^~
startrek.cpp:230:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  230 |     scanf("%lld %lld",&n,&m);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~
startrek.cpp:233:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  233 |         scanf("%lld %lld",&cn,&cm);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~

Subtask #1
0.0 / 0.0

# 결과 실행 시간 메모리 Grader output
1 Correct 16 ms 23764 KB Output is correct
2 Incorrect 13 ms 24064 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 11 ms 23764 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 23764 KB Output is correct
2 Correct 11 ms 23764 KB Output is correct
3 Correct 12 ms 23840 KB Output is correct
4 Correct 12 ms 23764 KB Output is correct
5 Correct 12 ms 23764 KB Output is correct
6 Correct 12 ms 23772 KB Output is correct

Subtask #4
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 23764 KB Output is correct
2 Correct 11 ms 23764 KB Output is correct
3 Correct 12 ms 23840 KB Output is correct
4 Correct 12 ms 23764 KB Output is correct
5 Correct 12 ms 23764 KB Output is correct
6 Correct 12 ms 23772 KB Output is correct
7 Correct 13 ms 24020 KB Output is correct
8 Correct 12 ms 24148 KB Output is correct
9 Correct 16 ms 24020 KB Output is correct
10 Correct 13 ms 23944 KB Output is correct
11 Correct 15 ms 24000 KB Output is correct

Subtask #5
0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 23764 KB Output is correct
2 Correct 11 ms 23764 KB Output is correct
3 Correct 12 ms 23840 KB Output is correct
4 Correct 12 ms 23764 KB Output is correct
5 Correct 12 ms 23764 KB Output is correct
6 Correct 12 ms 23772 KB Output is correct
7 Correct 13 ms 24020 KB Output is correct
8 Correct 12 ms 24148 KB Output is correct
9 Correct 16 ms 24020 KB Output is correct
10 Correct 13 ms 23944 KB Output is correct
11 Correct 15 ms 24000 KB Output is correct
12 Correct 198 ms 53280 KB Output is correct
13 Correct 177 ms 59648 KB Output is correct
14 Execution timed out 1074 ms 41768 KB Time limit exceeded
15 Halted 0 ms 0 KB -

Subtask #6
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 23764 KB Output is correct
2 Correct 11 ms 23764 KB Output is correct
3 Correct 12 ms 23840 KB Output is correct
4 Correct 12 ms 23764 KB Output is correct
5 Correct 12 ms 23764 KB Output is correct
6 Correct 12 ms 23772 KB Output is correct
7 Correct 13 ms 24020 KB Output is correct
8 Correct 12 ms 24148 KB Output is correct
9 Correct 16 ms 24020 KB Output is correct
10 Correct 13 ms 23944 KB Output is correct
11 Correct 15 ms 24000 KB Output is correct
12 Correct 12 ms 23764 KB Output is correct
13 Incorrect 12 ms 24052 KB Output isn't correct
14 Halted 0 ms 0 KB -

Subtask #7
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 23764 KB Output is correct
2 Correct 11 ms 23764 KB Output is correct
3 Correct 12 ms 23840 KB Output is correct
4 Correct 12 ms 23764 KB Output is correct
5 Correct 12 ms 23764 KB Output is correct
6 Correct 12 ms 23772 KB Output is correct
7 Correct 13 ms 24020 KB Output is correct
8 Correct 12 ms 24148 KB Output is correct
9 Correct 16 ms 24020 KB Output is correct
10 Correct 13 ms 23944 KB Output is correct
11 Correct 15 ms 24000 KB Output is correct
12 Correct 198 ms 53280 KB Output is correct
13 Correct 177 ms 59648 KB Output is correct
14 Execution timed out 1074 ms 41768 KB Time limit exceeded
15 Halted 0 ms 0 KB -

Subtask #8
0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 16 ms 23764 KB Output is correct
2 Incorrect 13 ms 24064 KB Output isn't correct
3 Halted 0 ms 0 KB -