제출 #1320262

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1320262		kasamchi	전선 연결 (IOI17_wiring)	C++20	컴파일 에러	0 ms	0 KiB

wiring

long long min_total_length(vector<int> r, vector<int> b) {
	int N = r.size() + b.size();
	int ridx = 0, bidx = 0;
	vector<int> pos = {0}, col = {0};
	while (ridx < r.size() || bidx < b.size()) {
		if (bidx == b.size()) {
			pos.push_back(r[ridx]);
			col.push_back(0);
			ridx++;
		} else if (ridx == r.size()) {
			pos.push_back(b[bidx]);
			col.push_back(1);
			bidx++;
		} else if (r[ridx] < b[bidx]) {
			pos.push_back(r[ridx]);
			col.push_back(0);
			ridx++;
		} else {
			pos.push_back(b[bidx]);
			col.push_back(1);
			bidx++;
		}
	}

	vector<long long> pre(N + 1);
	for (int i = 1; i <= N; i++) {
		pre[i] = pre[i - 1] + pos[i];
	}

	vector<long long> dp(N + 1, (long long)1e18);
	for (int idx = 1; idx <= N; ) {
		int clb = idx, crb = idx;
		while (crb <= N && col[crb] == col[clb]) {
			crb++;
		}
		idx = crb;
		crb--;
		if (clb == 1) {
			continue;
		}

		int prb = clb - 1, plb = prb;
		while (plb >= 1 && col[plb] == col[prb]) {
			plb--;
		}
		plb++;

		for (int c = clb; c <= crb; c++) {
			int psz = prb - plb + 1, csz = c - clb + 1;
			long long sum = 0;
			sum += pre[c] - pre[clb - 1];
			sum -= pre[prb] - pre[plb - 1];
			if (psz <= csz) {
				sum -= pos[prb] * (csz - psz);
			} else {
				sum += pos[clb] * (psz - csz);
			}

			for (int i = 0; i < max(psz, csz); i++) {
				int p = plb + i;
				long long cur = (plb == 1 ? 0 : min(dp[p - 1], dp[p]));
				dp[c] = min(dp[c], cur + sum);
				if (i < max(psz, csz)) {
					sum += pos[plb + i];
					if (psz - i > csz) {
						sum -= pos[clb];
					} else {
						sum -= pos[prb];
					}
				}
				if (plb == 1) {
					break;
				}
			}
		}
	}
	return dp[N];
}

컴파일 시 표준 에러 (stderr) 메시지

wiring.cpp:1:28: error: 'vector' was not declared in this scope
    1 | long long min_total_length(vector<int> r, vector<int> b) {
      |                            ^~~~~~
wiring.cpp:1:35: error: expected primary-expression before 'int'
    1 | long long min_total_length(vector<int> r, vector<int> b) {
      |                                   ^~~
wiring.cpp:1:43: error: 'vector' was not declared in this scope
    1 | long long min_total_length(vector<int> r, vector<int> b) {
      |                                           ^~~~~~
wiring.cpp:1:50: error: expected primary-expression before 'int'
    1 | long long min_total_length(vector<int> r, vector<int> b) {
      |                                                  ^~~
wiring.cpp:1:56: error: expression list treated as compound expression in initializer [-fpermissive]
    1 | long long min_total_length(vector<int> r, vector<int> b) {
      |                                                        ^