Submission #881278

#	Time	Username	Problem	Language	Result	Execution time	Memory
881278		noompty	Jump (BOI06_jump)	C++17	100 / 100	5 ms	1116 KiB

jump

#include <iostream>
#include <vector>
#include <tuple>
#include <queue>
#include <stack>
#include <deque>
#include <set>
#include <map>
#include <cmath>
#include <array>
#include <random>
#include <string>
#include <cassert>
#include <climits>
#include <algorithm>
#include <unordered_set>
#include <unordered_map>
using namespace std;
 
#define ll long long
#define f first
#define s second
 
void __print(int x) { cerr << x; }
void __print(long x) { cerr << x; }
void __print(long long x) { cerr << x; }
void __print(unsigned x) { cerr << x; }
void __print(unsigned long x) { cerr << x; }
void __print(unsigned long long x) { cerr << x; }
void __print(float x) { cerr << x; }
void __print(double x) { cerr << x; }
void __print(long double x) { cerr << x; }
void __print(char x) { cerr << '\'' << x << '\''; }
void __print(const char *x) { cerr << '\"' << x << '\"'; }
void __print(const string &x) { cerr << '\"' << x << '\"'; }
void __print(bool x) { cerr << (x ? "true" : "false"); }
 
template<typename A> void __print(const A &x);
template<typename A, typename B> void __print(const pair<A, B> &p);
template<typename... A> void __print(const tuple<A...> &t);
template<typename T> void __print(stack<T> s);
template<typename T> void __print(queue<T> q);
template<typename T, typename... U> void __print(priority_queue<T, U...> q);
 
template<typename A> void __print(const A &x) {
    bool first = true;
    cerr << '{';
    for (const auto &i : x) {
        cerr << (first ? "" : ","), __print(i);
        first = false;
    }
    cerr << '}';
}
 
template<typename A, typename B> void __print(const pair<A, B> &p) {
    cerr << '(';
    __print(p.f);
    cerr << ',';
    __print(p.s);
    cerr << ')';
}
 
template<typename... A> void __print(const tuple<A...> &t) {
    bool first = true;
    cerr << '(';
    apply([&first] (const auto &...args) { ((cerr << (first ? "" : ","), __print(args), first = false), ...); }, t);
    cerr << ')';
}
 
template<typename T> void __print(stack<T> s) {
    vector<T> debugVector;
    while (!s.empty()) {
        T t = s.top();
        debugVector.push_back(t);
        s.pop();
    }
    reverse(debugVector.begin(), debugVector.end());
    __print(debugVector);
}
 
template<typename T> void __print(queue<T> q) {
    vector<T> debugVector;
    while (!q.empty()) {
        T t = q.front();
        debugVector.push_back(t);
        q.pop();
    }
    __print(debugVector);
}
 
template<typename T, typename... U> void __print(priority_queue<T, U...> q) {
    vector<T> debugVector;
    while (!q.empty()) {
        T t = q.top();
        debugVector.push_back(t);
        q.pop();
    }
    __print(debugVector);
}
 
void _print() { cerr << "]\n"; }
 
template <typename Head, typename... Tail> void _print(const Head &H, const Tail &...T) {
    __print(H);
    if (sizeof...(T)) cerr << ", ";
    _print(T...);
}
 
#ifdef DEBUG
	#define D(...) cerr << "Line: " << __LINE__ << " [" << #__VA_ARGS__ << "] = ["; _print(__VA_ARGS__)
#else
	#define D(...)
#endif

int n, grid[105][105];
string dp[105][105];

string add(string x, string y) {
    string ret = "";
    int carry = 0;
    if (x.length() < y.length()) swap(x, y);
    reverse(x.begin(), x.end());
    reverse(y.begin(), y.end());
    for (int i = 0; i < y.length(); i++) {
        ret += ((carry + x[i] + y[i] - 2 * '0') % 10 + '0');
        carry = (carry + x[i] + y[i] - 2 * '0' >= 10 ? 1 : 0);
    }
    for (int i = y.length(); i < x.length(); i++) {
        ret += ((carry + x[i] - '0') % 10 + '0');
        carry = (carry + x[i] - '0' >= 10 ? 1 : 0);
    }
    if (carry) ret += '1';
    reverse(ret.begin(), ret.end());
    return ret;
}

int main() {

    ios_base::sync_with_stdio(false);
    cin.tie(0);

    cin >> n;
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < n; j++) {
            cin >> grid[i][j];
        }
    }

    fill(&dp[0][0], &dp[0][0] + sizeof(dp) / sizeof(dp[0][0]), "0");
    dp[0][0] = "1";
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < n; j++) {
            if (!grid[i][j]) continue;
            if (i + grid[i][j] < n) {
                dp[i + grid[i][j]][j] = add(dp[i + grid[i][j]][j], dp[i][j]);
            }
            if (j + grid[i][j] < n) {
                dp[i][j + grid[i][j]] = add(dp[i][j + grid[i][j]], dp[i][j]);
            }
        }
    }

    cout << dp[n - 1][n - 1] << "\n";

}

Compilation message (stderr)

jump.cpp: In function 'std::string add(std::string, std::string)':
jump.cpp:124:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  124 |     for (int i = 0; i < y.length(); i++) {
      |                     ~~^~~~~~~~~~~~
jump.cpp:128:32: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  128 |     for (int i = y.length(); i < x.length(); i++) {
      |                              ~~^~~~~~~~~~~~

• Subtask 1: 100 / 100