Submission #101050

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
101050	2019-03-16T07:30:14 Z	choikiwon	Crazy old lady (IZhO13_crazy)	C++17	100 / 100	18 ms	512 KB

crazy

#include<bits/stdc++.h>
using namespace std;

const int MN = 1010;

int N;
int P[MN];

void main2() {
    scanf("%d", &N);

    for(int i = 0; i < N; i++) {
        scanf("%d", &P[i]);
        P[i]--;
    }

    int ans = -1;
    for(int i = 0; i < N; i++) {
        vector<int> chk(N, 0);

        chk[ P[0] ] = 1;
        int t = i != 0, ok = 1;
        for(int j = 1; j < N; j++) {
            if(j - t == i) t = 0;

            //cout << i << ' ' << j - t << endl;

            if(!chk[j - t] && P[j] != j - t) {
                ok = 0;
                break;
            }
            chk[ P[j] ] = 1;
        }

        if(ok) {
            if(ans == -1) ans = i;
            else {
                ans = -1;
                break;
            }
        }
    }

    if(ans == -1) printf("0\n");
    else printf("%d\n", ans + 1);
}

int TC;
int main() {
    scanf("%d", &TC);
    while(TC--) main2();
}

Compilation message

crazy.cpp: In function 'void main2()':
crazy.cpp:10:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &N);
     ~~~~~^~~~~~~~~~
crazy.cpp:13:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d", &P[i]);
         ~~~~~^~~~~~~~~~~~~
crazy.cpp: In function 'int main()':
crazy.cpp:50:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &TC);
     ~~~~~^~~~~~~~~~~

Subtask #1

100.0 / 100.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	3 ms	384 KB	Output is correct
2	Correct	3 ms	256 KB	Output is correct
3	Correct	3 ms	384 KB	Output is correct
4	Correct	3 ms	384 KB	Output is correct
5	Correct	2 ms	256 KB	Output is correct
6	Correct	2 ms	256 KB	Output is correct
7	Correct	3 ms	256 KB	Output is correct
8	Correct	3 ms	256 KB	Output is correct
9	Correct	4 ms	384 KB	Output is correct
10	Correct	5 ms	384 KB	Output is correct
11	Correct	5 ms	256 KB	Output is correct
12	Correct	5 ms	384 KB	Output is correct
13	Correct	5 ms	384 KB	Output is correct
14	Correct	5 ms	384 KB	Output is correct
15	Correct	7 ms	384 KB	Output is correct
16	Correct	8 ms	512 KB	Output is correct
17	Correct	13 ms	384 KB	Output is correct
18	Correct	14 ms	384 KB	Output is correct
19	Correct	13 ms	384 KB	Output is correct
20	Correct	18 ms	384 KB	Output is correct