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Submission #277511

# Submission time Handle Problem Language Result Execution time Memory
277511 2020-08-21T05:32:34 Z 문홍윤(#5120) Travelling Salesperson (CCO20_day2problem1) C++17
25 / 25
 622 ms 24440 KB 
#include <bits/stdc++.h>
#define eb emplace_back
#define mp make_pair
#define F first
#define S second
#define all(x) x.begin(), x.end()
#define svec(x) sort(x.begin(), x.end())
#define press(x) x.erase(unique(x.begin(), x.end()), x.end())
using namespace std;
typedef long long LL;
typedef pair<int, int> pii;
typedef pair<LL, LL> pll;
typedef pair<int, LL> pil;
typedef pair<LL, int> pli;
const LL llinf=2e18;
const int inf=1e9;

char str[2010][2010];
int n;

void solve(int st){
    vector<int> r, b;
    r.eb(st); b.eb(st);
    for(int i=1; i<=n; i++){
        if(i==st)continue;
        int ch=r.back();
        if(str[ch][i]=='R'){
            b.pop_back();
            if(!b.size()){
                if(ch==st&&r[0]!=st){
                    reverse(all(r));
                    b.eb(r.back());
                    i--;
                    continue;
                }
                r.eb(i);
                b.eb(i);
            }
            else{
                if(str[i][b.back()]=='B'){
                    if(ch==st&&r[0]!=st){
                        reverse(all(r));
                        if(str[r.back()][b.back()]=='R')r.eb(b.back());
                        else b.eb(r.back());
                        i--;
                        continue;
                    }
                    r.eb(i);
                    b.eb(i);
                }
                else{
                    r.eb(i);
                    r.eb(b.back());
                }
            }
        }
        else{
            r.pop_back();
            if(!r.size()){
                if(ch==st&&b[0]!=st){
                    reverse(all(b));
                    r.eb(b.back());
                    i--;
                    continue;
                }
                r.eb(i);
                b.eb(i);
            }
            else{
                if(str[i][r.back()]=='R'){
                    if(ch==st&&b[0]!=st){
                        reverse(all(b));
                        if(str[r.back()][b.back()]=='R')r.eb(b.back());
                        else b.eb(r.back());
                        i--;
                        continue;
                    }
                    r.eb(i);
                    b.eb(i);
                }
                else{
                    b.eb(i);
                    b.eb(r.back());
                }
            }
        }
    }
    printf("%d\n", n);
    if(r[0]!=st&&b[0]!=st)while(1);
    if(r.size()){
        for(int i=0; i<r.size()-1; i++)assert(str[r[i]][r[i+1]]=='R');
    }
    if(b.size()){
        for(int i=0; i<b.size()-1; i++)assert(str[b[i]][b[i+1]]=='B');
    }
    if(r[0]==st){
        b.pop_back();
        reverse(all(b));
        for(auto i:r)printf("%d ", i);
        for(auto i:b)printf("%d ", i);
    }
    else{
        r.pop_back();
        reverse(all(r));
        for(auto i:b)printf("%d ", i);
        for(auto i:r)printf("%d ", i);
    }
    puts("");
}

int main(){
    scanf("%d", &n);
    for(int i=2; i<=n; i++)scanf("%s", str[i]+1);
    if(n==2)return !printf("2\n1 2\n2\n2 1");
    if(n==3)return !printf("3\n1 2 3\n3\n2 3 1\n3\n3 1 2");
    for(int i=2; i<=n; i++){
        for(int j=1; j<i; j++)str[j][i]=str[i][j];
    }
    for(int i=1; i<=n; i++)solve(i);
}

Compilation message

Main.cpp: In function 'void solve(int)':
Main.cpp:91:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   91 |         for(int i=0; i<r.size()-1; i++)assert(str[r[i]][r[i+1]]=='R');
      |                      ~^~~~~~~~~~~
Main.cpp:94:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   94 |         for(int i=0; i<b.size()-1; i++)assert(str[b[i]][b[i+1]]=='B');
      |                      ~^~~~~~~~~~~
Main.cpp: In function 'int main()':
Main.cpp:112:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  112 |     scanf("%d", &n);
      |     ~~~~~^~~~~~~~~~
Main.cpp:113:33: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  113 |     for(int i=2; i<=n; i++)scanf("%s", str[i]+1);
      |                            ~~~~~^~~~~~~~~~~~~~~~

Subtask #1
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 0 ms 256 KB Output is correct
4 Correct 1 ms 256 KB Output is correct
5 Correct 1 ms 256 KB Output is correct
6 Correct 1 ms 256 KB Output is correct
7 Correct 0 ms 384 KB Output is correct
8 Correct 0 ms 256 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 0 ms 384 KB Output is correct
12 Correct 1 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 1 ms 512 KB Output is correct
16 Correct 530 ms 24056 KB Output is correct
17 Correct 485 ms 24188 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 482 ms 23928 KB Output is correct
20 Correct 536 ms 24056 KB Output is correct
21 Correct 1 ms 384 KB Output is correct
22 Correct 485 ms 23900 KB Output is correct
23 Correct 555 ms 24056 KB Output is correct
24 Correct 2 ms 512 KB Output is correct
25 Correct 488 ms 23944 KB Output is correct
26 Correct 539 ms 24188 KB Output is correct
27 Correct 32 ms 2424 KB Output is correct
28 Correct 486 ms 24056 KB Output is correct
29 Correct 494 ms 24104 KB Output is correct
30 Correct 519 ms 24096 KB Output is correct
31 Correct 489 ms 24016 KB Output is correct
32 Correct 504 ms 23928 KB Output is correct
33 Correct 503 ms 24184 KB Output is correct
34 Correct 501 ms 24128 KB Output is correct
35 Correct 497 ms 24160 KB Output is correct
36 Correct 506 ms 24044 KB Output is correct
37 Correct 496 ms 23800 KB Output is correct
38 Correct 497 ms 23908 KB Output is correct
39 Correct 524 ms 24084 KB Output is correct
40 Correct 490 ms 24160 KB Output is correct
41 Correct 478 ms 23928 KB Output is correct
42 Correct 534 ms 23928 KB Output is correct
43 Correct 493 ms 24020 KB Output is correct
44 Correct 512 ms 24040 KB Output is correct
45 Correct 492 ms 24036 KB Output is correct
46 Correct 481 ms 24056 KB Output is correct
47 Correct 520 ms 24060 KB Output is correct
48 Correct 487 ms 23928 KB Output is correct
49 Correct 494 ms 24232 KB Output is correct
50 Correct 508 ms 23996 KB Output is correct
51 Correct 492 ms 23800 KB Output is correct
52 Correct 547 ms 24268 KB Output is correct
53 Correct 550 ms 23964 KB Output is correct
54 Correct 495 ms 24312 KB Output is correct
55 Correct 518 ms 24056 KB Output is correct
56 Correct 518 ms 24112 KB Output is correct
57 Correct 513 ms 24152 KB Output is correct
58 Correct 515 ms 24092 KB Output is correct
59 Correct 532 ms 24172 KB Output is correct
60 Correct 600 ms 24176 KB Output is correct
61 Correct 598 ms 24124 KB Output is correct
62 Correct 591 ms 24124 KB Output is correct
63 Correct 549 ms 24056 KB Output is correct
64 Correct 548 ms 24184 KB Output is correct
65 Correct 622 ms 24112 KB Output is correct
66 Correct 522 ms 24184 KB Output is correct
67 Correct 515 ms 24056 KB Output is correct
68 Correct 514 ms 24056 KB Output is correct
69 Correct 554 ms 24188 KB Output is correct
70 Correct 563 ms 24056 KB Output is correct
71 Correct 555 ms 24184 KB Output is correct
72 Correct 538 ms 24060 KB Output is correct
73 Correct 569 ms 24068 KB Output is correct
74 Correct 552 ms 24056 KB Output is correct
75 Correct 557 ms 24056 KB Output is correct
76 Correct 522 ms 24184 KB Output is correct
77 Correct 518 ms 24184 KB Output is correct
78 Correct 519 ms 24180 KB Output is correct
79 Correct 529 ms 24056 KB Output is correct
80 Correct 531 ms 24056 KB Output is correct
81 Correct 542 ms 24076 KB Output is correct
82 Correct 520 ms 24056 KB Output is correct
83 Correct 565 ms 24096 KB Output is correct
84 Correct 526 ms 24032 KB Output is correct
85 Correct 564 ms 24168 KB Output is correct
86 Correct 522 ms 24440 KB Output is correct
87 Correct 33 ms 2424 KB Output is correct
88 Correct 41 ms 2424 KB Output is correct
89 Correct 523 ms 24264 KB Output is correct
90 Correct 539 ms 24092 KB Output is correct
91 Correct 33 ms 2424 KB Output is correct
92 Correct 34 ms 2552 KB Output is correct
93 Correct 541 ms 24056 KB Output is correct
94 Correct 584 ms 24056 KB Output is correct
95 Correct 33 ms 2424 KB Output is correct
96 Correct 33 ms 2424 KB Output is correct
97 Correct 519 ms 24188 KB Output is correct
98 Correct 556 ms 24184 KB Output is correct