제출 #760951

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
760951		drdilyor	Catfish Farm (IOI22_fish)	C++17	컴파일 에러	0 ms	0 KiB

fish

#include "fish.h"

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

ll max_weights(
    int n, int m, vector<int> x, vector<int> y, vector<int> w) {
    vector arr(n+1, vector(n+1, 0ll));
    for (int i = 0; i < m; i++)
        arr[x[i]+1][y[i]] += w[i];
    vector pref(n+1, vector(n+2, 0ll));
    for (int i = 0; i <= n; i++) {
        for (int j = 0; j <= n; j++)
            pref[i][j+1] = pref[i][j] + arr[i][j];

    auto sum = [&](int c, int l, int r) { // [l, r)
        ll res = pref[c][r] - pref[c][l];
        if (l <= r) return res;
        else return 0ll;
    };

    vector memo(2, vector(n+1, vector(n+1, -1ll)));
    auto dp = [&](auto& dp, bool inc, int c, int h2)->ll{
        if (c == n+1) return 0;
        ll& res = memo[inc][c][h2];
        if (res!=-1) return res;
        res = 0;
        if (inc) {
            for (int h3 = h2; h3 <= n; h3++) {
                ll val = sum(c-1, h2, h3) + sum(c, h3, h2);
                res = max(res, val + dp(dp, true, c+1, h3));
                res = max(res, val + dp(dp, false, c+1, h3));
            }
        } else {
            for (int h3 = 0; h3 <= h2; h3++) {
                ll val = sum(c-1, h2, h3) + sum(c, h3, h2);
                res = max(res, val + dp(dp, false, c+1, h3));
            }
        }
        res = max(res, dp(dp, true, c+1, 0));
        return res;
    };
    ll res = dp(dp, true, 1, 0);
    return res;

}

컴파일 시 표준 에러 (stderr) 메시지

fish.cpp: In function 'll max_weights(int, int, std::vector<int>, std::vector<int>, std::vector<int>)':
fish.cpp:47:1: error: expected '}' at end of input
   47 | }
      | ^
fish.cpp:8:64: note: to match this '{'
    8 |     int n, int m, vector<int> x, vector<int> y, vector<int> w) {
      |                                                                ^
fish.cpp:9:37: warning: control reaches end of non-void function [-Wreturn-type]
    9 |     vector arr(n+1, vector(n+1, 0ll));
      |                                     ^