Submission #1342235

#	Time	Username	Problem	Language	Result	Execution time	Memory
1342235		doantaolaaidi	Pohlepko (COCI16_pohlepko)	C++20	40 / 80	61 ms	131072 KiB

pohlepko

#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define AC "test"
#define foru(i, l, r) for (int i = (l); i <= (r); i++)
#define ford(i, l, r) for (int i = (l); i >= (r); i--)
#define fi first
#define se second

typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef vector<int> vii;
typedef vector<ll> vll;

const ll inf = 1e9 + 7;
const ll linf = 1e18 + 7;
const int mod = 1e9 + 7;
const int maxn = 1e6 + 7;
const int base = 31;

void fastIO(){
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
}

ll mul(ll a, ll b){
    a%=mod;
    ll res = 0;
    while (b){
        if (b%2) res = (res + a)%mod;
        a = (a + a)%mod;
        b/=2;
    }
    return res;
}

ll Pow(ll a, ll b){
    ll ans = 1;
    while (b){
        if (b % 2) ans = mul(ans, a);
        a = mul(a, a);
        b/=2;
    }
    return ans;
}

int n, m;
string s, dp[1002][1002];
char a[1002][1002];

void inp(){
    cin >> n >> m;
    foru(i, 1, n){
        cin >> s;
        s = " " + s;
        foru(j, 1, m){
            a[i][j] = s[j];
        }
    }
    foru(i, 1, n){
        foru(j, 1, m){
            if (j > 1 && i > 1){
                if (dp[i - 1][j] > dp[i][j - 1]){
                    dp[i][j] = dp[i][j - 1] + a[i][j];
                }
                else dp[i][j] = dp[i - 1][j] + a[i][j];
            }
            else if (j == 1){
                dp[i][j] = dp[i - 1][j] + a[i][j];
            }
            else dp[i][j] = dp[i][j - 1] + a[i][j];
        }
    }
    cout << dp[n][m];
}

int main(){
    fastIO();
    if (fopen(AC".inp", "r")){
        freopen(AC".inp", "r", stdin);
        freopen(AC".out", "w", stdout);
    }
    inp();
}

Compilation message (stderr)

pohlepko.cpp: In function 'int main()':
pohlepko.cpp:81:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   81 |         freopen(AC".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
pohlepko.cpp:82:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   82 |         freopen(AC".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 40 / 80