Submission #210569

#	Time	Username	Problem	Language	Result	Execution time	Memory
210569		bash	Genetics (BOI18_genetics)	C++17	100 / 100	1243 ms	148984 KiB

genetics

/**
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*/
#include <cstring>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#include <vector>
#include <list>
#include <map>
#include <set>
#include <deque>
#include <stack>
#include <bitset>
#include <algorithm>
#include <functional>
#include <numeric>
#include <utility>
#include <sstream>
#include <iostream>
#include <iomanip>
#include <cstdio>
#include <queue>
#include <cmath>
#include <cstdlib>
#include <ctime>
#include <cassert>
 
#define F first
#define S second
#define endl '\n'
#define deb(x) cout<<#x<<' '<<x<<endl;
#define pb push_back
 using namespace __gnu_pbds;
using namespace std;

typedef tree<
int,
null_type,
less<int>,
rb_tree_tag,
tree_order_statistics_node_update>
ordered_set;
/*
#ifdef IZI_KATKA
#define int __int64_t
#else
#define int __int64
#endif
*/
const long long MOD = 1e9 + 7;
const long long MAXN = 1e6 + 1;

typedef long long ll;

#define pii pair<int,int>
 
long long readInt() {
    bool minus1 = false;
    long long result = 0;
    char ch;
    ch = getchar();
    while (true) {
        if (ch == '-') break;
        if (ch >= '0' && ch <= '9') break;
        ch = getchar();
    }
    if (ch == '-') minus1 = true; else result = ch-'0';
    while (true) {
        ch = getchar();
        if (ch < '0' || ch > '9') break;
        result = result*10 + (ch - '0');
    }
    if (minus1)
        return -result;
    else
        return result;
}

#define int ll

const int base = 3145739;

const int N = 4111;

int pw[N];
int f[N][5];
int a[N][N];

void add(int &x, int y) {
    x = x + y >= MOD ? x + y - MOD : x + y;
}

int to(char c) {
    if (c == 'A') return 0;
    if (c == 'C') return 1;
    if (c == 'G') return 2;
    return 3;
}

 main() {
	#ifdef IZI_KATKA
	assert(freopen("input", "r", stdin));
    assert(freopen("output", "w", stdout));
    #endif
    int n = readInt(), m = readInt(), k = readInt();
	pw[0] = 1;
	for (int i = 1; i < n; ++i) pw[i] = 1LL * base * pw[i - 1] % MOD;
    for (int i = 0; i < n; ++i) {
        string s; cin >> s;
        for (int j = 0; j < m; ++j) {
            a[i][j] = to(s[j]);
        }
        for (int j = 0; j < m; ++j) {
            add(f[j][a[i][j]], pw[i]);     
        }
    }
	for (int i = 0; i < n; ++i) {
        long long cur = 0;
        long long all = 0;
        for (int j = 0; j < n; ++j) {
            if (j != i) add(all, (pw[j] * k) % MOD);
        }
        for (int j = 0; j < m; ++j) {
            for (int k = 0; k < 4; ++k) {
                if (k != a[i][j]) add(cur,f[j][k]);
            }
        }
        if (cur == all) {
            cout << i + 1; return 0;
        }
    }
    return 0;
}

Compilation message (stderr)

genetics.cpp:100:7: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
  main() {
       ^

• Subtask 1: 27 / 27
• Subtask 2: 19 / 19
• Subtask 3: 28 / 28
• Subtask 4: 26 / 26