oj.uz

Submission #257474

# Submission time Handle Problem Language Result Execution time Memory
257474 2020-08-04T10:12:50 Z sonvip9 Trobojnica (COCI19_trobojnica) C++14
60 / 110
 25 ms 9232 KB 
#include<bits/stdc++.h>
#define fi first
#define se second
#define pb push_back
#define ll long long
#define ii pair <int,int>
#define pl pair <ll,ll>
#define fr(i,x,y) for (int i=x;i<=y;i++)
#define ft(i,x,y) for (int i=y;i>=x;i--)
#define N 100005
using namespace std ;
int res,n,color[1002][1002],first_color[1002][1002],dem_mau[N][3];
string s;
void inp()
{
   // freopen("task2.inp","r",stdin) ;
   // freopen("task2.out","w",stdout);
    cin>>n>>s;
}
bool hs(int u,int v)
{
    if (u>v) swap(u,v);
    if (u==1 and v==n) return true ;
    return false;
}
int tong_mau(int st,int ed,int j){
    if (ed!=n and st!=1)
    return dem_mau[n][j] - (dem_mau[n][j]-dem_mau[ed-1][j])-(dem_mau[st-1][j]);
    else return dem_mau[n][j] - (dem_mau[n][j]-dem_mau[ed][j])-(dem_mau[st-1][j]);
}
bool checking_chanle(int a,int b,int c){
   // cout<<a<<" "<<b<<" "<<c<<endl;
    a = max(a,0);
    b = max(b,0);
    c = max(c,0);
    int tong = a+b+c ;
    int r = tong%2;
    if((a==0 and b==0) or (a==0 and c==0) or (b==0 and c==0)) return false ;
    if (a%2!=r or b%2!=r or c%2!=r) return false ;
    return true ;
}
bool ad = true ;
void duyet(int st,int ed)
{
    if (st>ed) swap(st,ed);
    if (ed-st==2)
    {
        //cout<<res<<endl;
        if (res==n-3)
        {
            cout<<"DA"<<"\n";
            fr(i,1,n)
            {
                fr(j,i+2,n)
                {
                    if (color[i][j]!=0)
                    {
                        if (hs(i,j)) continue ;
                        cout<<i<<" "<<j<<" "<<color[i][j]<<"\n";
                    }
                }
            }
            exit(0);
        }
        return ;
    }
    fr(i,st+1,ed-1)
    {
        fr(now_color,1,3)
        {
            if (now_color!=color[st][ed])
            {
                int dem_ed_phai[4],dem_ed_trai[4],dem_st_phai[4],dem_st_trai[4];
                fr(j,1,3){
                   dem_ed_trai[j] = dem_mau[ed-1][j]-dem_mau[i-1][j];
                   dem_ed_phai[j] = dem_mau[n][j] - dem_ed_trai[j] ;
                   dem_st_trai[j] = dem_mau[i-1][j]-dem_mau[st-1][j] ;
                   dem_st_phai[j] = dem_mau[n][j] - dem_st_trai[j];
                }
                //cout<<st<<" "<<ed<<" "<<tong_mau(st,ed,1)<<" "<<tong_mau(st,ed,2)<<" "<<tong_mau(st,ed,3)<<endl;
                bool ok1 = true , ok2 = true  ;
                if (color[st][i]==0) {
                        color[st][i] = color[i][st] = 6 - now_color - color[st][ed];
                        dem_st_phai[color[st][i]]++;
                        dem_st_trai[color[st][i]]++;
                        ok1 = false ;
                        res++;
                }
                if (color[ed][i]==0){
                    color[ed][i] = color[i][ed] = now_color ;
                    dem_ed_phai[color[ed][i]]++;
                    dem_ed_trai[color[ed][i]]++;
                    ok2 = false ;
                    res++;
                }
                if (checking_chanle(dem_ed_phai[1],dem_ed_phai[2],dem_ed_phai[3]))
                    if (checking_chanle(dem_ed_trai[1],dem_ed_trai[2],dem_ed_trai[3]))
                        ok2 = true ;
                if (checking_chanle(dem_st_phai[1],dem_st_phai[2],dem_st_phai[3]))
                     if (checking_chanle(dem_st_trai[1],dem_st_trai[2],dem_st_trai[3]))
                       ok1 = true ;
                if (ok1 and ok2)
                {

                     duyet(st,i);
                     duyet(ed,i);
                     return ;
                }
                color[i][st] = color[st][i] = first_color[st][i];
                if (first_color[st][i]==0) res--;
                color[i][ed] = color[ed][i] = first_color[ed][i];
                if (first_color[ed][i]==0) res--;
            }
        }
    }
}
void sub1()
{
    fr(i,0,n-1)
    {
        if (i!=n-1)
        {
            color[i+1][i+2] = color[i+2][i+1] = s[i]-'0';
        }
        else color[1][n] = color[n][1] = s[i]-'0';
    }
    s=" "+s;
    fr(i,1,n){
       fr(j,1,3) dem_mau[i][j] = dem_mau[i-1][j];
       dem_mau[i][s[i]-'0']++;
    }
    if (!checking_chanle(dem_mau[n][1],dem_mau[n][2],dem_mau[n][3])){
        cout<<"NE";
        exit(0);
    }
    fr(i,1,n)
      fr(j,1,n)
         first_color[i][j] = color[i][j];
    duyet(n,1);
    cout<<"NE";
}
int main()
{
    inp();
    sub1();
}

Compilation message

trobojnica.cpp: In function 'void duyet(int, int)':
trobojnica.cpp:75:52: warning: iteration 2 invokes undefined behavior [-Waggressive-loop-optimizations]
                    dem_ed_trai[j] = dem_mau[ed-1][j]-dem_mau[i-1][j];
                                     ~~~~~~~~~~~~~~~^
trobojnica.cpp:8:33: note: within this loop
 #define fr(i,x,y) for (int i=x;i<=y;i++)
trobojnica.cpp:74:20:
                 fr(j,1,3){
                    ~~~~~         
trobojnica.cpp:74:17: note: in expansion of macro 'fr'
                 fr(j,1,3){
                 ^~
trobojnica.cpp: In function 'void sub1()':
trobojnica.cpp:129:48: warning: iteration 2 invokes undefined behavior [-Waggressive-loop-optimizations]
        fr(j,1,3) dem_mau[i][j] = dem_mau[i-1][j];
                                  ~~~~~~~~~~~~~~^
trobojnica.cpp:8:33: note: within this loop
 #define fr(i,x,y) for (int i=x;i<=y;i++)
trobojnica.cpp:129:11:
        fr(j,1,3) dem_mau[i][j] = dem_mau[i-1][j];
           ~~~~~                  
trobojnica.cpp:129:8: note: in expansion of macro 'fr'
        fr(j,1,3) dem_mau[i][j] = dem_mau[i-1][j];
        ^~
trobojnica.cpp:129:48: warning: array subscript is above array bounds [-Warray-bounds]
        fr(j,1,3) dem_mau[i][j] = dem_mau[i-1][j];
                                  ~~~~~~~~~~~~~~^
trobojnica.cpp:129:30: warning: array subscript is above array bounds [-Warray-bounds]
        fr(j,1,3) dem_mau[i][j] = dem_mau[i-1][j];
                  ~~~~~~~~~~~~^
trobojnica.cpp:132:25: warning: array subscript is above array bounds [-Warray-bounds]
     if (!checking_chanle(dem_mau[n][1],dem_mau[n][2],dem_mau[n][3])){
          ~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 1 ms 512 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 0 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 0 ms 384 KB Output is correct
10 Correct 0 ms 384 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 1 ms 512 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 0 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 0 ms 384 KB Output is correct
10 Correct 0 ms 384 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 2 ms 4224 KB Output is correct
13 Correct 25 ms 8320 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 0 ms 384 KB Output is correct
16 Correct 6 ms 8192 KB Output is correct
17 Correct 0 ms 384 KB Output is correct
18 Correct 6 ms 8192 KB Output is correct
19 Correct 3 ms 4224 KB Output is correct
20 Correct 11 ms 8320 KB Output is correct

Subtask #3
0.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 1 ms 512 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 0 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 0 ms 384 KB Output is correct
10 Correct 0 ms 384 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 2 ms 4224 KB Output is correct
13 Correct 25 ms 8320 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 0 ms 384 KB Output is correct
16 Correct 6 ms 8192 KB Output is correct
17 Correct 0 ms 384 KB Output is correct
18 Correct 6 ms 8192 KB Output is correct
19 Correct 3 ms 4224 KB Output is correct
20 Correct 11 ms 8320 KB Output is correct
21 Runtime error 17 ms 9232 KB Execution killed with signal 11 (could be triggered by violating memory limits)
22 Halted 0 ms 0 KB -